Fix bad chmod mode

Summary:
As titiled

Created from CodeHub with https://fburl.com/edit-in-codehub

Reviewed By: youngvanster, pssrawat

Differential Revision: D68514256

fbshipit-source-id: 3c830709bd95a12950fc8cc2164c18365ff14753

Author: Varun Puri

benchmarking/platforms/android/adb.py

@@ -28,7 +28,7 @@ def run(self, *args, **kwargs):
         adb = self._addADB()
         return super(ADB, self).run(adb, *args, **kwargs)
 
-    def push(self, src, tgt, chmod="+755"):
+    def push(self, src, tgt, chmod="755"):
         # Always remove the old file before pushing the new file
         self.deleteFile(tgt)
         res = self.run("push", src, tgt)