Bug 1811007 - Remove all unused strings marked moz:removedIn <= 108.

app/src/main/res/values/strings.xml

@@ -498,8 +498,6 @@
     a section where users see a list of tabs that they have visited in the past few days -->
     <string name="customize_toggle_recently_visited">Recently visited</string>
     <!-- Title for the customize home screen section with Pocket. -->
-    <string name="customize_toggle_pocket" moz:RemovedIn="108" tools:ignore="UnusedResources">Pocket</string>
-    <!-- Title for the customize home screen section with Pocket. -->
     <string name="customize_toggle_pocket_2">Thought-provoking stories</string>
     <!-- Summary for the customize home screen section with Pocket. The first parameter is product name Pocket -->
     <string name="customize_toggle_pocket_summary">Articles powered by %s</string>
@@ -1923,8 +1921,6 @@
     <string name="pocket_stories_categories_header">Stories by topic</string>
     <!-- Text of a button allowing users to access an external url for more Pocket recommendations. -->
     <string name="pocket_stories_placeholder_text">Discover more</string>
-    <!-- Title of an app feature. Smaller than a heading.-->
-    <string name="pocket_stories_feature_title" moz:removedIn="108" tools:ignore="UnusedResources">Powered by Pocket.</string>
     <!-- Title of an app feature. Smaller than a heading. The first parameter is product name Pocket -->
     <string name="pocket_stories_feature_title_2">Powered by %s.</string>
     <!-- Caption for describing a certain feature. The placeholder is for a clickable text (eg: Learn more) which will load an url in a new tab when clicked.  -->