fix: do not throw on empty key list

Do not throw an error on android, when an empty key array is passed to mutliSet and multiRemove

Author: henrylau-sa

android/src/main/java/com/reactnativecommunity/asyncstorage/AsyncStorageModule.java

@@ -196,7 +196,7 @@ protected void doInBackgroundGuarded(Void... params) {
   @ReactMethod
   public void multiSet(final ReadableArray keyValueArray, final Callback callback) {
     if (keyValueArray.size() == 0) {
-      callback.invoke(AsyncStorageErrorUtil.getInvalidKeyError(null));
+      callback.invoke();
       return;
     }
 
@@ -261,7 +261,7 @@ protected void doInBackgroundGuarded(Void... params) {
   @ReactMethod
   public void multiRemove(final ReadableArray keys, final Callback callback) {
     if (keys.size() == 0) {
-      callback.invoke(AsyncStorageErrorUtil.getInvalidKeyError(null));
+      callback.invoke();
       return;
     }