Prevent waiting for charge twice

BUG=skia:5111
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1840003002

Review URL: https://codereview.chromium.org/1840003002
diff --git a/platform_tools/android/bin/adb_wait_for_device b/platform_tools/android/bin/adb_wait_for_device
index 6e92bf9..45ed4b2 100755
--- a/platform_tools/android/bin/adb_wait_for_device
+++ b/platform_tools/android/bin/adb_wait_for_device
@@ -16,5 +16,3 @@
 done
 
 echo "Connected!"
-
-$SCRIPT_DIR/adb_wait_for_charge $DEVICE_SERIAL
\ No newline at end of file