ci: Disable valgrind in some build jobs

ci: Disable valgrind in some build jobs

Once the glcpp valgrind test works as intended again, it would delay
the dependent test jobs by ~1-4 minutes.

The meson-clover job would run the glcpp valgrind test multiple times
and take more than 10 minutes to finish.

valgrind can't work in the meson-android job, would need an ARM backend.

v2:
* Disable in meson-clover as well.

Reviewed-by: Dylan Baker <dylan.c.baker@intel.com> # v1
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9528>