chore(config): remove client .uid/.import gitignore additions

These patterns were added for the renderer (now separate). Client
gitignore rules are the client team's responsibility.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -2,12 +2,10 @@
 .cache/
 server/target/
 
-# Godot
+# Godot client (further ignores managed by client team)
 client/.godot/
 client/export/
 client/reports/
-client/**/*.import
-client/**/*.uid
 
 # Renderer (separate Godot project for sprite pipeline)
 renderer/.godot/