Remove unused @KeepGettersAndSetters annotation (#50565)

Summary:
Pull Request resolved: #50565

This annotation is unused. It was referenced in the past with Buck1 OSS but now we can safely remove it.

Changelog:
[Internal] [Changed] -

Reviewed By: fabriziocucci

Differential Revision: D72645219

fbshipit-source-id: 0327fa562276193ad9f48dc81ea7a9fa0da19eee

Author: cortinico

packages/react-native/ReactAndroid/proguard-rules.pro

@@ -23,7 +23,6 @@
 # Keep our interfaces so they can be used by other ProGuard rules.
 # See http://sourceforge.net/p/proguard/bugs/466/
 -keep,allowobfuscation @interface com.facebook.proguard.annotations.DoNotStrip
--keep,allowobfuscation @interface com.facebook.proguard.annotations.KeepGettersAndSetters
 
 # Do not strip any method/class that is annotated with @DoNotStrip
 -keep @com.facebook.proguard.annotations.DoNotStrip class *
@@ -41,11 +40,6 @@
     *;
 }
 
--keepclassmembers @com.facebook.proguard.annotations.KeepGettersAndSetters class * {
-  void set*(***);
-  *** get*();
-}
-
 -keep class * implements com.facebook.react.bridge.JavaScriptModule { *; }
 -keep class * implements com.facebook.react.bridge.NativeModule { *; }
 -keepclassmembers,includedescriptorclasses class * { native <methods>; }