remove Intent.FLAG_ACTIVITY_NEW_TASK flag check

Bug: 29071719
Change-Id: Ib3eb0198454e3ed84c0f98dce82e7981aa57fc4f
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 6c302ed..1f17951 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -9135,9 +9135,6 @@
                         // sense, so turn off auto-remove.
                         intent.addFlags(Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS);
                     }
-                } else if ((intent.getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) {
-                    // Must be a new task.
-                    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                 }
                 if (!comp.equals(mLastAddedTaskComponent) || callingUid != mLastAddedTaskUid) {
                     mLastAddedTaskActivity = null;