[ChromeDriver] Clean the unused code in checking with session action

In ProcessInputActionSequence function, we now check if both of the
actions' ids and types match with the ones in session, so we should
remove the check error for type.

Bug: 606367
Change-Id: Id6306433155ba3087212ec27437d1209a25d19c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1627632Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662747}

chrome/test/chromedriver/window_commands.cc

@@ -1068,12 +1068,6 @@ Status ProcessInputActionSequence(
                         "pointer type");
         }
       }
-      std::string source_type;
-      source->GetString("type", &source_type);
-      if (source_type != type) {
-        return Status(kInvalidArgument,
-                      "input state with same id has a different type");
-      }
       break;
     }
   }