[TouchToFill][Android] Remove deprecated, duplicate feature flag

This CL deletes the unused feature that was used for the TouchToFill
bottom sheet. It has no associated flag and — according to codesearch —
no reference anywhere.

Bug: 1011185
Change-Id: I329429b5613eaebca1366cbddadd07a30ebd95d7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1847305Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Friedrich [CET] <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703761}

components/password_manager/core/common/password_manager_features.cc

@@ -75,10 +75,6 @@ const base::Feature kPasswordManagerOnboardingAndroid = {
 const base::Feature kRecoverPasswordsForSyncUsers = {
     "RecoverPasswordsForSyncUsers", base::FEATURE_ENABLED_BY_DEFAULT};
 
-// Enables the touch to fill feature for Android.
-const base::Feature kTouchToFillAndroid = {"TouchToFillAndroid",
-                                           base::FEATURE_DISABLED_BY_DEFAULT};
-
 // Enables support of filling and saving on username first flow.
 const base::Feature kUsernameFirstFlow = {"UsernameFirstFlow",
                                           base::FEATURE_DISABLED_BY_DEFAULT};

components/password_manager/core/common/password_manager_features.h

@@ -31,7 +31,6 @@ extern const base::Feature kPasswordEditingAndroid;
 extern const base::Feature kPasswordImport;
 extern const base::Feature kPasswordManagerOnboardingAndroid;
 extern const base::Feature kRecoverPasswordsForSyncUsers;
-extern const base::Feature kTouchToFillAndroid;
 extern const base::Feature kUsernameFirstFlow;
 extern const base::Feature kStickyBubble;