Make android scripts not warn about ADB in newer SDKs

The older SDK says:
$ adb version
Android Debug Bridge version 1.0.32

The newer SDK says:
$ adb version
Android Debug Bridge version 1.0.32
Revision eac51f2bb6a8-android

Removes the shebang as the file is not intended to be
run, and the copyright would render it useless.
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1583793002

Review URL: https://codereview.chromium.org/1583793002
1 file changed