Revert "[Autofill Assistant] Add custom onboarding informational text for password change intents"

This reverts commit 54c22ea1.

Reason for revert: IDS_AUTOFILL_ASSISTANT_INIT_MESSAGE_PASSWORD_CHANGE.png.sha1 needs to be a sha1 not a PNG file

Original change's description:
> [Autofill Assistant] Add custom onboarding informational text for password change intents
> 
> Design mocks: https://docs.google.com/presentation/d/1jsRsqvW8ZasT2iJGu-_8ebY3bPDe6ic8x8touqeNjuo/edit#slide=id.g8e7b42d005_0_56
> 
> Bug: 1110309
> 
> Change-Id: Id0e4316e71d57b80271c0a596cd4de505dc1e54b
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2332164
> Reviewed-by: Marian Fechete <marianfe@google.com>
> Reviewed-by: Clemens Arbesser <arbesser@google.com>
> Commit-Queue: Milica Selakovic <selakovic@google.com>
> Cr-Commit-Position: refs/heads/master@{#794544}

TBR=kolos@chromium.org,arbesser@google.com,marianfe@google.com,selakovic@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1110309
Change-Id: Iab189bf597780556cb4e49984da57a7058e4173b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339596Reviewed-by: Ben Mason <benmason@chromium.org>
Commit-Queue: Ben Mason <benmason@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795051}

chrome/android/features/autofill_assistant/java/src/org/chromium/chrome/browser/autofill_assistant/AssistantOnboardingCoordinator.java

@@ -40,7 +40,6 @@ class AssistantOnboardingCoordinator {
     private static final String INTENT_IDENTFIER = "INTENT";
     private static final String BUY_MOVIE_TICKETS_INTENT = "BUY_MOVIE_TICKET";
     private static final String RENT_CAR_INTENT = "RENT_CAR";
-    private static final String PASSWORD_CHANGE_INTENT = "PASSWORD_CHANGE";
     private static final String FLIGHTS_INTENT = "FLIGHTS_CHECKIN";
     private static final String FOOD_ORDERING_INTENT = "FOOD_ORDERING";
     private static final String VOICE_SEARCH_INTENT = "TELEPORT";
@@ -238,10 +237,6 @@ class AssistantOnboardingCoordinator {
                 termsTextView.setText(R.string.autofill_assistant_init_message_short);
                 titleTextView.setText(R.string.autofill_assistant_init_message_rent_car);
                 break;
-            case PASSWORD_CHANGE_INTENT:
-                termsTextView.setText(R.string.autofill_assistant_init_message_short);
-                titleTextView.setText(R.string.autofill_assistant_init_message_password_change);
-                break;
             case SHOPPING_INTENT:
             case SHOPPING_ASSISTED_CHECKOUT_INTENT:
                 termsTextView.setText(R.string.autofill_assistant_init_message_short);

chrome/android/features/autofill_assistant/java/strings/android_chrome_autofill_assistant_strings.grd

@@ -177,9 +177,6 @@
       <message name="IDS_AUTOFILL_ASSISTANT_INIT_MESSAGE_RENT_CAR" desc="Onboarding message describing autofill assistant's capability for car rentals.">
         Rent a car\nin just a few taps
       </message>
-      <message name="IDS_AUTOFILL_ASSISTANT_INIT_MESSAGE_PASSWORD_CHANGE" desc="Onboarding message describing autofill assistant's capability for password change.">
-        Let Google Assistant help you\nchange your password
-      </message>
       <message name="IDS_AUTOFILL_ASSISTANT_INIT_MESSAGE_BUY_MOVIE_TICKETS" desc="Onboarding message describing autofill assistant's capability for movie tickets.">
         Buy movie tickets\nin just a few taps
       </message>