Remove redundant constructs in Kotlin files

[Hammadtanveer]

Purpose / Description

Removed some redundant constructs found during Android Studio code inspection.

Fixes

No linked issue — code cleanup only

Approach

Removed redundant return keywords in DisplayDeckNode.kt and InitialActivity.kt and removed redundant qualifier name in SavedBrowserSearchesDialogFragment.kt

How Has This Been Tested?

Built the project locally and inspection warnings are gone.

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have performed a self-review of your own code

[lukstbit]

Thank you!