Athena: Temporarily remove MuonGeoModelTest and MuonGeoModelTestR4 from build

As discussed in ATLASRECTS-7946, we will temporarily remove these packages from Athena since they are blocking CI from running.

(AthSimulation does not include them).

cc @fwinkl @jojungge

merged

mentioned in commit fbb94625

Merging immediately, since if I've messed up we will see it in broken CIs ... which are already broken.

This merge request affects 1 package:

• Projects/Athena

This merge request affects 1 file:

• Projects/Athena/package_filters.txt

Adding @rbianchi ,@akraszna as watchers

added Build main review-pending-level-1 labels

mentioned in merge request !70186 (merged)

CI Result SUCCESS (hash a4abdb10)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
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