Remove `seedWords` completely from metamask state (#6920)

`seedWords` used to be stored on the metamask state temporarily at
certain points. This hasn't been the case since #5994, but references
to this state remained. All of the logic remained for correctly updating
these `seedWords`, handling them during navigation, and scrubbing them
from the state.

However the state was never updated in practice. The `seedWords` are
still returned by `verifySeedPhrase`, and they're still stored in
component state in a few places. But they aren't ever set in the Redux
metadata state or the Preferences controller.

All references to this state have been removed, along with any logic
for interacting with this state. A few unused actions were removed as
well.

1 files changed, 2 insertions, 97 deletions

diff --git a/ui/app/store/actions.js b/ui/app/store/actions.js
index 942a518db..f02cdd0fa 100644
--- a/ui/app/store/actions.js
+++ b/ui/app/store/actions.js
@@ -67,7 +67,6 @@ var actions = {
   markPasswordForgotten,
   unMarkPasswordForgotten,
   SHOW_INIT_MENU: 'SHOW_INIT_MENU',
-  SHOW_NEW_VAULT_SEED: 'SHOW_NEW_VAULT_SEED',
   SHOW_INFO_PAGE: 'SHOW_INFO_PAGE',
   SHOW_IMPORT_PAGE: 'SHOW_IMPORT_PAGE',
   SHOW_NEW_ACCOUNT_PAGE: 'SHOW_NEW_ACCOUNT_PAGE',
@@ -81,7 +80,6 @@ var actions = {
   showImportPage,
   showNewAccountPage,
   setNewAccountForm,
-  createNewVaultAndKeychain: createNewVaultAndKeychain,
   createNewVaultAndRestore: createNewVaultAndRestore,
   createNewVaultInProgress: createNewVaultInProgress,
   createNewVaultAndGetSeedPhrase,
@@ -97,14 +95,12 @@ var actions = {
   navigateToNewAccountScreen,
   resetAccount,
   removeAccount,
-  showNewVaultSeed: showNewVaultSeed,
   showInfoPage: showInfoPage,
   CLOSE_WELCOME_SCREEN: 'CLOSE_WELCOME_SCREEN',
   closeWelcomeScreen,
   // seed recovery actions
   REVEAL_SEED_CONFIRMATION: 'REVEAL_SEED_CONFIRMATION',
   revealSeedConfirmation: revealSeedConfirmation,
-  requestRevealSeed: requestRevealSeed,
   requestRevealSeedWords,
   // unlock screen
   UNLOCK_IN_PROGRESS: 'UNLOCK_IN_PROGRESS',
@@ -217,7 +213,6 @@ var actions = {
   gasLoadingStarted,
   gasLoadingFinished,
   // app messages
-  confirmSeedWords: confirmSeedWords,
   showAccountDetail: showAccountDetail,
   BACK_TO_ACCOUNT_DETAIL: 'BACK_TO_ACCOUNT_DETAIL',
   backToAccountDetail: backToAccountDetail,
@@ -444,44 +439,18 @@ function transitionBackward () {
   }
 }
 
-function confirmSeedWords () {
-  return dispatch => {
-    dispatch(actions.showLoadingIndication())
-    log.debug(`background.clearSeedWordCache`)
-    return new Promise((resolve, reject) => {
-      background.clearSeedWordCache((err, account) => {
-        dispatch(actions.hideLoadingIndication())
-        if (err) {
-          dispatch(actions.displayWarning(err.message))
-          return reject(err)
-        }
-
-        log.info('Seed word cache cleared. ' + account)
-        dispatch(actions.showAccountsPage())
-        resolve(account)
-      })
-    })
-  }
-}
-
 function createNewVaultAndRestore (password, seed) {
   return (dispatch) => {
     dispatch(actions.showLoadingIndication())
     log.debug(`background.createNewVaultAndRestore`)
 
     return new Promise((resolve, reject) => {
-      background.clearSeedWordCache((err) => {
+      background.createNewVaultAndRestore(password, seed, (err) => {
         if (err) {
           return reject(err)
         }
 
-        background.createNewVaultAndRestore(password, seed, (err) => {
-          if (err) {
-            return reject(err)
-          }
-
-          resolve()
-        })
+        resolve()
       })
     })
       .then(() => dispatch(actions.unMarkPasswordForgotten()))
@@ -497,36 +466,6 @@ function createNewVaultAndRestore (password, seed) {
   }
 }
 
-function createNewVaultAndKeychain (password) {
-  return dispatch => {
-    dispatch(actions.showLoadingIndication())
-    log.debug(`background.createNewVaultAndKeychain`)
-
-    return new Promise((resolve, reject) => {
-      background.createNewVaultAndKeychain(password, err => {
-        if (err) {
-          dispatch(actions.displayWarning(err.message))
-          return reject(err)
-        }
-
-        log.debug(`background.placeSeedWords`)
-
-        background.placeSeedWords((err) => {
-          if (err) {
-            dispatch(actions.displayWarning(err.message))
-            return reject(err)
-          }
-
-          resolve()
-        })
-      })
-    })
-      .then(() => forceUpdateMetamaskState(dispatch))
-      .then(() => dispatch(actions.hideLoadingIndication()))
-      .catch(() => dispatch(actions.hideLoadingIndication()))
-  }
-}
-
 function createNewVaultAndGetSeedPhrase (password) {
   return async dispatch => {
     dispatch(actions.showLoadingIndication())
@@ -616,33 +555,6 @@ function verifySeedPhrase () {
   })
 }
 
-function requestRevealSeed (password) {
-  return dispatch => {
-    dispatch(actions.showLoadingIndication())
-    log.debug(`background.submitPassword`)
-    return new Promise((resolve, reject) => {
-      background.submitPassword(password, err => {
-        if (err) {
-          dispatch(actions.displayWarning(err.message))
-          return reject(err)
-        }
-
-        log.debug(`background.placeSeedWords`)
-        background.placeSeedWords((err, result) => {
-          if (err) {
-            dispatch(actions.displayWarning(err.message))
-            return reject(err)
-          }
-
-          dispatch(actions.showNewVaultSeed(result))
-          dispatch(actions.hideLoadingIndication())
-          resolve()
-        })
-      })
-    })
-  }
-}
-
 function requestRevealSeedWords (password) {
   return async dispatch => {
     dispatch(actions.showLoadingIndication())
@@ -1531,13 +1443,6 @@ function createNewVaultInProgress () {
   }
 }
 
-function showNewVaultSeed (seed) {
-  return {
-    type: actions.SHOW_NEW_VAULT_SEED,
-    value: seed,
-  }
-}
-
 function closeWelcomeScreen () {
   return {
     type: actions.CLOSE_WELCOME_SCREEN,