android: LogcatCollector: Require explicit adb_device
android: LogcatCollector: Require explicit adb_device

It's already passed in by its only caller. I'm trying to limit the
places where we construct an AdbDevice from config.

stb-tester/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester