frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.

The two Themyscira GSM codec libraries (libgsmefr and libgsmfrp) use Semantic
Versioning, as described at <https://semver.org/>.  In the present source
release package, the semantic versions of the two libraries are as follows:

libgsmefr version 1.0.0
libgsmfrp version 1.0.2