Remove `pickFirst` arguments (#27964)

Summary:
This is no longer necessary with the new Flipper release.
Pull Request resolved: https://github.com/facebook/react-native/pull/27964

Test Plan:
This was a built-time problem so the CI jobs would catch this.

## Changelog

[Android] [Removed] - pickFirst options for RNTester and template

Differential Revision: D19815829

Pulled By: passy

fbshipit-source-id: d8f66e64e7e922b8ea18ad6eeec3a1c8e6bc77fa

RNTester/android/app/build.gradle

@@ -103,13 +103,6 @@ def useIntlJsc = false
 android {
     compileSdkVersion 29
 
-    packagingOptions {
-        pickFirst '**/armeabi-v7a/libc++_shared.so'
-        pickFirst '**/x86/libc++_shared.so'
-        pickFirst '**/x86_64/libc++_shared.so'
-        pickFirst '**/arm64-v8a/libc++_shared.so'
-    }
-
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8

template/android/app/build.gradle

@@ -164,13 +164,6 @@ android {
         }
     }
 
-    packagingOptions {
-        pickFirst "lib/armeabi-v7a/libc++_shared.so"
-        pickFirst "lib/arm64-v8a/libc++_shared.so"
-        pickFirst "lib/x86/libc++_shared.so"
-        pickFirst "lib/x86_64/libc++_shared.so"
-    }
-
     // applicationVariants are e.g. debug, release
     applicationVariants.all { variant ->
         variant.outputs.each { output ->