Fix T83390: Remove temporary, for-one-release deprecation hints

Revert "Point users to new location of "Show Group Colors" option",
commit rB6ed6741ee35930bf81fad9a5eb6bb17eea168725.

These deprecation hints were intended for one release only, and thus can
be removed now.

release/scripts/startup/bl_ui/space_graph.py

@@ -18,7 +18,6 @@
 
 # <pep8 compliant>
 
-import bpy
 from bpy.types import Header, Menu, Panel
 from bl_ui.space_dopesheet import (
     DopesheetFilterPopoverBase,
@@ -120,10 +119,6 @@ class GRAPH_MT_view(Menu):
         layout.prop(st, "use_realtime_update")
         layout.prop(st, "show_cursor")
         layout.prop(st, "show_sliders")
-
-        if bpy.app.version < (2, 93):
-            layout.operator("anim.show_group_colors_deprecated", icon='CHECKBOX_HLT')
-
         layout.prop(st, "use_auto_merge_keyframes")
 
         if st.mode != 'DRIVERS':