Remove feature flag RichTextEditor, it's replaced by an advanced settings.

libraries/featureflag/api/src/main/kotlin/io/element/android/libraries/featureflag/api/FeatureFlags.kt

@@ -43,9 +43,4 @@ enum class FeatureFlags(
         title = "Show notification settings",
         defaultValue = true,
     ),
-    RichTextEditor(
-        key = "feature.richtexteditor",
-        title = "Enable rich text editor",
-        defaultValue = true,
-    ),
 }

libraries/featureflag/impl/src/main/kotlin/io/element/android/libraries/featureflag/impl/StaticFeatureFlagProvider.kt

@@ -35,7 +35,6 @@ class StaticFeatureFlagProvider @Inject constructor() :
                 FeatureFlags.LocationSharing -> true
                 FeatureFlags.Polls -> true
                 FeatureFlags.NotificationSettings -> true
-                FeatureFlags.RichTextEditor -> true
             }
         } else {
             false