[Telemetry] Remove usage of adb_commands in android_command_line_backend and android_browser_finder

tools/telemetry/telemetry/internal/backends/adb_commands.py

Index: tools/telemetry/telemetry/internal/backends/adb_commands.py
diff --git a/tools/telemetry/telemetry/internal/backends/adb_commands.py b/tools/telemetry/telemetry/internal/backends/adb_commands.py
index 1ae3bd5e11f40fad19b011a7d51f0e719ded52c3..4ea4a22d0782b540d9b0bd535059181c44cf7de9 100644
--- a/tools/telemetry/telemetry/internal/backends/adb_commands.py
+++ b/tools/telemetry/telemetry/internal/backends/adb_commands.py
@@ -18,14 +18,11 @@ try:
 except Exception:
   ports = None
 from pylib.device import device_utils  # pylint: disable=F0401
-from pylib.utils import apk_helper  # pylint: disable=F0401
 
 
 def IsAndroidSupported():
   return device_utils != None
 
-def GetPackageName(apk_path):
-  return apk_helper.GetPackageName(apk_path)
 
 def GetAttachedDevices():
   """Returns a list of attached, online android devices.