Revert "Fix for the uploadAccountResponse for correct error message/reason (#244)" (#251)

This reverts commit 36bbdce.

Author: hiranya911

CHANGELOG.md

@@ -2,7 +2,6 @@
 
 - [changed] Removed org.json dependency and replaced with com.google.code.gson.
 - [changed] Upgraded Mockito dependency, and fixed the build on Java 11.
-- [fixed] UploadAccountResponse now has the correct error message/reason.
 
 # v6.7.0
 

src/main/java/com/google/firebase/auth/internal/UploadAccountResponse.java

@@ -35,7 +35,7 @@ public static class ErrorInfo {
     @Key("index")
     private int index;
 
-    @Key("errorMessage")
+    @Key("message")
     private String message;
 
     public int getIndex() {

src/test/resources/importUsersError.json

@@ -1,6 +1,6 @@
 {
   "error": [
-    {"index": 0, "errorMessage": "Some error occurred in user1"},
-    {"index": 2, "errorMessage": "Another error occurred in user3"}
+    {"index": 0, "message": "Some error occurred in user1"},
+    {"index": 2, "message": "Another error occurred in user3"}
   ]
 }