Revert "Add abifilters to our gradle templates" (#142089)

Reverts flutter/flutter#135529

This had some failures in postsubmit:

https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20gradle_plugin_light_apk_test/17054/overview
and 

https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20gradle_plugin_fat_apk_test/17262/overview

We should revert and then investigate.

packages/flutter_tools/templates/app_shared/android-java.tmpl/app/build.gradle.tmpl

@@ -41,9 +41,6 @@ android {
         targetSdk flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        ndk {
-            abiFilters 'arm64-v8a', 'x86_64', 'armeabi-v7a'
-        }
     }
 
     buildTypes {

packages/flutter_tools/templates/app_shared/android-kotlin.tmpl/app/build.gradle.tmpl

@@ -49,9 +49,6 @@ android {
         targetSdk flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        ndk {
-            abiFilters 'arm64-v8a', 'x86_64', 'armeabi-v7a'
-        }
     }
 
     buildTypes {