Remove vendored proguard annotation (#26069)

Summary:
There have been multiple complaints about combining RN with various
other FB libraries, including Litho and Flipper, because of bundled dependencies
that can't be deduplicated by Gradle.

This is one of three current conflicts:

1) Proguard annotations (this PR)
2) Yoga
3) fbjni

While the Yoga group name doesn't make a massive amount of sense
it was the easiest existing package to use and since we don't
have a better namespace for this, we might as well use this.

A similar change to Litho is landing right now.

## Changelog

[Android] [Changed] - Use centralized package for DoNotStrip annotation
Pull Request resolved: https://github.com/facebook/react-native/pull/26069

Test Plan:
```
yarn
./gradlew :RNTester:android:app:assembleDebug
```

Reviewed By: cpojer

Differential Revision: D16827430

Pulled By: passy

fbshipit-source-id: 87542b5422fee598d8e635651441f0ecd42eb9d7

ReactAndroid/build.gradle

@@ -356,6 +356,7 @@ android {
 
 dependencies {
     api("com.facebook.infer.annotation:infer-annotation:0.11.2")
+    api("com.facebook.yoga:proguard-annotations:1.14.1")
     api("javax.inject:javax.inject:1")
     api("androidx.appcompat:appcompat:1.0.2")
     api("com.facebook.fresco:fresco:${FRESCO_VERSION}")

ReactAndroid/src/main/java/com/facebook/proguard/annotations/DoNotStrip.java

@@ -1,22 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
- * directory of this source tree.
- */
-package com.facebook.proguard.annotations;
-
-import static java.lang.annotation.RetentionPolicy.CLASS;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.Target;
-
-/**
- * Add this annotation to a class, method, or field to instruct Proguard to not strip it out.
- *
- * <p>This is useful for methods called via reflection that could appear as unused to Proguard.
- */
-@Target({ElementType.TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.CONSTRUCTOR})
-@Retention(CLASS)
-public @interface DoNotStrip {}