Drop x86_64_v2-centos7-gcc12+detdesc-dbg+alubsan from sanitizers builds

@rmatev, since https://lhcb-nightlies.web.cern.ch/nightly/lhcb-sanitizers/1077 this platforms never completes because it takes more than one day to build Moore(Cache) and regularly there are very long silences from the build so the it is marked as failure an retried. For example, from lhcb-sanitizers/1082 and omitting tons of warnings:

[...]
2023-10-08 03:29:46,597:DEBUG   : running cmake --build Moore/build -j 10 -- -k0
2023-10-08 03:29:46,598:DEBUG   : apptainer command: /cvmfs/lhcbdev.cern.ch/nightly-environments/5ced04d9e2e8ad4a44b36e93198a8c2f88c23ebb2313ab50b202d5e241e8cb8d/bin/apptainer exec --contain --bind /cvmfs --bind /home/lblocal/jenkins-build/workspace/nightly-builds/build@5:/workspace --bind /home/lblocal/jenkins-build/workspace/nightly-builds/build@5 --pwd /workspace/build --env PATH=/cvmfs/lhcb.cern.ch/lib/bin/x86_64-centos7:/cvmfs/lhcb.cern.ch/lib/bin/x86_64-centos7:/cvmfs/lhcb.cern.ch/lib/bin/Linux-x86_64:/cvmfs/lhcb.cern.ch/lib/bin:/cvmfs/lhcbdev.cern.ch/nightly-environments/5ced04d9e2e8ad4a44b36e93198a8c2f88c23ebb2313ab50b202d5e241e8cb8d/bin:/cvmfs/lhcbdev.cern.ch/conda/miniconda/linux-64/1622055603/condabin:/usr/sue/bin:/usr/lib64/ccache:/usr/local/bin:/usr/bin:/opt/puppetlabs/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin /cvmfs/lhcb.cern.ch/containers/os-base/centos7-devel/prod/amd64 cmake --build Moore/build -j 10 -- -k0
2023-10-08 03:29:48,735:DEBUG   : [1/203] Generating ConfigurableUser DB for Moore
2023-10-08 03:29:48,782:DEBUG   : [2/203] Merging .confdb files for Moore
2023-10-08 03:30:34,290:DEBUG   : [3/203] Preprocess options for Moore_FunctorCache_Hlt1_hlt1_pp_default
2023-10-08 03:30:35,219:DEBUG   : [4/203] Preprocess options for Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_1
2023-10-08 03:30:39,757:DEBUG   : [5/203] Preprocess options for Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_2
2023-10-08 03:30:44,848:DEBUG   : [6/203] Preprocess options for Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022
2023-10-08 03:31:08,105:DEBUG   : [7/203] Preprocess options for Moore_FunctorCache_Hlt2_options_hlt2_pp_thor_without_UT
2023-10-08 03:31:12,987:DEBUG   : [8/203] Preprocess options for Moore_FunctorCache_Hlt2_options_hlt2_pp_thor
2023-10-08 03:31:16,117:DEBUG   : [9/203] Preprocess options for Moore_FunctorCache_Hlt2_options_hlt2_pp_2022_reprocessing
2023-10-08 03:31:19,854:DEBUG   : [10/203] Preprocess options for Moore_FunctorCache_Hlt2_options_hlt2_pp_commissioning
2023-10-08 03:32:08,497:DEBUG   : [11/203] Generating sources for Moore_FunctorCache_Hlt1_hlt1_pp_default
2023-10-08 03:36:22,207:DEBUG   : [12/203] Generating sources for Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_1
2023-10-08 03:38:56,452:DEBUG   : [13/203] Generating sources for Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_2
2023-10-08 03:39:29,795:DEBUG   : [14/203] Generating sources for Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022
2023-10-08 03:40:07,490:DEBUG   : [15/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_1.dir/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_1_srcs/FUNCTORS_FunctorFactory_0002.cpp.o
2023-10-08 03:40:36,261:DEBUG   : [16/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_1.dir/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2023_1_srcs/FUNCTORS_FunctorFactory_0003.cpp.o
[...]
2023-10-09 01:41:01,380:DEBUG   : [190/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022.dir/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022_srcs/FUNCTORS_FunctorFactory_0025.cpp.o
2023-10-09 01:43:13,503:DEBUG   : [191/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022.dir/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022_srcs/FUNCTORS_FunctorFactory_0024.cpp.o
2023-10-09 01:51:39,473:DEBUG   : [192/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_hlt2_pp_commissioning.dir/Moore_FunctorCache_Hlt2_options_hlt2_pp_commissioning_srcs/FUNCTORS_FunctorFactory_0025.cpp.o
2023-10-09 02:41:10,741:DEBUG   : [193/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022.dir/Moore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022_srcs/FUNCTORS_FunctorFactory_0019.cpp.o
2023-10-09 02:41:38,035:DEBUG   : [194/203] Linking CXX shared module MooreCache/libMoore_FunctorCache_Hlt2_options_sprucing_spruce_production_2022.so
2023-10-09 03:25:13,210:DEBUG   : [195/203] Building CXX object MooreCache/CMakeFiles/Moore_FunctorCache_Hlt2_options_hlt2_pp_2022_reprocessing.dir/Moore_FunctorCache_Hlt2_options_hlt2_pp_2022_reprocessing_srcs/FUNCTORS_FunctorFactory_0004.cpp.o
Build timed out (after 240 minutes). Marking the build as failed.

We can always re-enable at a later stage, but I'd prefer to avoid wasting resources.