Revert "Add custom hd path option (#9367)" (#9875)

This reverts commit f30d261e69.

The custom HD path option was found to be unsafe to use, because the
displayed list of accounts would differ depending on which application
was open on the Ledger device. Essentially Ledger was accepting invalid
inputs, and returning junk responses.

This was too dangerous to ship, as it could leave users with an account
that they can't reliably recover. If we don't know how the derivation
is happening, then allowing this import puts our users at risk of
losing funds.

We can re-introduce this functionality after adding validation to
ensure that we only allow inputs that are handled correctly by Ledger.

app/_locales/en/messages.json

@@ -1425,7 +1425,7 @@
     "message": "Select Locale"
   },
   "selectPathHelp": {
-    "message": "If you don't see your existing Ledger accounts below, try a different HD path."
+    "message": "If you don't see your existing Ledger accounts below, try switching paths to \"Legacy (MEW / MyCrypto)\""
   },
   "selectType": {
     "message": "Select Type"

ui/app/pages/create-account/connect-hardware/account-list.js

@@ -5,13 +5,6 @@ import getAccountLink from '../../../../lib/account-link'
 import Button from '../../../components/ui/button'
 
 class AccountList extends Component {
-  state = {
-    showCustomInput: false,
-    customPathSelected: false,
-  }
-
-  inputRef = React.createRef()
-
   getHdPaths() {
     return [
       {
@@ -22,10 +15,6 @@ class AccountList extends Component {
         label: `Legacy (MEW / MyCrypto)`,
         value: `m/44'/60'/0'`,
       },
-      {
-        label: `Custom`,
-        value: `custom`,
-      },
     ]
   }
 
@@ -43,7 +32,6 @@ class AccountList extends Component {
   }
 
   renderHdPathSelector() {
-    const { showCustomInput } = this.state
     const { onPathChange, selectedPath } = this.props
 
     const options = this.getHdPaths()
@@ -58,19 +46,13 @@ class AccountList extends Component {
             className="hw-connect__hdPath__select"
             name="hd-path-select"
             clearable={false}
-            value={showCustomInput ? 'custom' : selectedPath}
+            value={selectedPath}
             options={options}
             onChange={(opt) => {
-              if (opt.value === 'custom') {
-                this.setState({ showCustomInput: true })
-              } else {
-                this.setState({ showCustomInput: false })
-                onPathChange(opt.value)
-              }
+              onPathChange(opt.value)
             }}
           />
         </div>
-        {showCustomInput && this.renderCustomInput()}
       </div>
     )
   }
@@ -79,22 +61,6 @@ class AccountList extends Component {
     return device.slice(0, 1).toUpperCase() + device.slice(1)
   }
 
-  renderCustomInput() {
-    const hdPaths = this.getHdPaths()
-    return (
-      <input
-        className="hw-connect__custom-input"
-        type="text"
-        defaultValue={hdPaths[0].value}
-        onChange={() => {
-          this.setState({ customPathSelected: false })
-        }}
-        ref={this.inputRef}
-        autoFocus
-      />
-    )
-  }
-
   renderHeader() {
     const { device } = this.props
     return (
@@ -177,9 +143,6 @@ class AccountList extends Component {
   }
 
   renderButtons() {
-    const { showCustomInput, customPathSelected } = this.state
-    const { onPathChange } = this.props
-    const showSelectButton = showCustomInput && !customPathSelected
     const disabled = this.props.selectedAccount === null
     const buttonProps = {}
     if (disabled) {
@@ -196,29 +159,15 @@ class AccountList extends Component {
         >
           {this.context.t('cancel')}
         </Button>
-        {showSelectButton ? (
-          <Button
-            type="primary"
-            large
-            className="new-external-account-form__button unlock"
-            onClick={() => {
-              onPathChange(this.inputRef.current.value)
-              this.setState({ customPathSelected: true })
-            }}
-          >
-            {this.context.t('selectHdPath')}
-          </Button>
-        ) : (
-          <Button
-            type="primary"
-            large
-            className="new-external-account-form__button unlock"
-            disabled={disabled}
-            onClick={this.props.onUnlockAccount.bind(this, this.props.device)}
-          >
-            {this.context.t('unlock')}
-          </Button>
-        )}
+        <Button
+          type="primary"
+          large
+          className="new-external-account-form__button unlock"
+          disabled={disabled}
+          onClick={this.props.onUnlockAccount.bind(this, this.props.device)}
+        >
+          {this.context.t('unlock')}
+        </Button>
       </div>
     )
   }
@@ -234,12 +183,11 @@ class AccountList extends Component {
   }
 
   render() {
-    const { showCustomInput, customPathSelected } = this.state
     return (
       <div className="new-external-account-form account-list">
         {this.renderHeader()}
-        {(!showCustomInput || customPathSelected) && this.renderAccounts()}
-        {(!showCustomInput || customPathSelected) && this.renderPagination()}
+        {this.renderAccounts()}
+        {this.renderPagination()}
         {this.renderButtons()}
         {this.renderForgetDevice()}
       </div>

ui/app/pages/create-account/connect-hardware/index.scss

@@ -196,17 +196,6 @@
     margin: 0 auto 20px;
     display: flex;
   }
-
-  &__custom-input {
-    height: 54px;
-    width: 335px;
-    border: 1px solid $geyser;
-    border-radius: 4px;
-    background-color: $white;
-    color: $scorpion;
-    font-size: 16px;
-    padding: 0 20px;
-  }
 }
 
 .hw-account-list {