gdbserver: do not announce static tracepoint support

Remove the announcement that `qXfer:statictrace:read` and
`StaticTracepoints` are supported.  Associated to this, remove the
handling of "qTfSTM", "qTsSTM", and "qTSTMat" packets and the
qXfer:statictrace:read handling.

Approved-By: Simon Marchi <simon.marchi@efficios.com>
3 files changed