Removed hw subcommand from program.

Removed all code associated with the hw subcommand,
and adjusted some subcommand error messages
and unit tests accordingly to reflect that
config is the only existing subcommand now.

Test: atest torq_unit_test
Test: atest command_executor_unit_test
Bug: 366513050

Change-Id: Ice5e964e01e29193e7583eba0d4e117653329f86
5 files changed