Delete orphaned source files not referenced in any CMakeLists.txt (#4791)

* Delete MAPL_Config.F90 and time_ave_util.F90 (#4785)

- Delete base/MAPL_Config.F90 (MAPL_ConfigMod); superseded by HConfig in MAPL3
- Delete Apps/time_ave_util.F90 (disabled in build; functionality covered by GEOS_Util/time_avg.F)
- Delete base/tests/Test_MAPL_Config.pf and remove from base/tests/CMakeLists.txt
- Remove use MAPL_ConfigMod from base/Base.F90
- Remove MAPL_Config.F90 from base/CMakeLists.txt
- Remove commented-out time_ave_util.x entries from Apps/CMakeLists.txt

Closes #4776.

* Delete orphaned source files not referenced in any CMakeLists.txt (#4789)

- base/tests/: testbin.F90, testhorz.F90, tstsort.F90, ut_ExtData.F90, utDistIO.F90
- Tests/: pfio_MAPL_demo.F90, MAPL_demo_fargparse.F90
- profiler/: DistributedMeterNode.F90
- gridcomps/StatisticsGridComp/: StatisticsMap.F90
- generic3g/: GenericCouplerComponent.F90, registry/ComponentRegistry.F90,
  registry/ConnPtStateItemSpecMap.F90, registry/ItemSpecRegistry.F90,
  registry/RelConnPtStateItemPtrMap.F90, specs/FieldClassAspectMap.F90,
  specs/ServiceProviderSpec.F90, specs/ServiceRequesterSpec.F90,
  tests/MockItemSpec.F90, transforms/TimeAverageTransform.F90

* Delete orphaned cap3g server design sketches (#4790)

- gridcomps/cap3g/ApplicationMode.F90
- gridcomps/cap3g/MAPL_Framework.F90
- gridcomps/cap3g/mit.F90
- gridcomps/cap3g/ModelMode.F90
- gridcomps/cap3g/ServerMode.F90

Designs are preserved in GH issue #4790 for future reference when implementing
the MAPL3 server architecture.

Author: tclune

Apps/CMakeLists.txt

@@ -36,10 +36,6 @@ ecbuild_add_executable (TARGET Regrid_Util.x SOURCES Regrid_Util/Regrid_Util.F90
 target_link_libraries (Regrid_Util.x PRIVATE MAPL MAPL.base MAPL.profiler MPI::MPI_Fortran ESMF::ESMF OpenMP::OpenMP_Fortran)
 target_include_directories (Regrid_Util.x PRIVATE $<BUILD_INTERFACE:${MAPL_SOURCE_DIR}/include>)
 
-#ecbuild_add_executable (TARGET time_ave_util.x SOURCES time_ave_util.F90)
-#target_link_libraries (time_ave_util.x PRIVATE MAPL2 MPI::MPI_Fortran ESMF::ESMF OpenMP::OpenMP_Fortran)
-#target_include_directories (time_ave_util.x PRIVATE $<BUILD_INTERFACE:${MAPL_SOURCE_DIR}/include>)
-
 if (PFUNIT_FOUND)
   add_subdirectory(tests EXCLUDE_FROM_ALL)
 endif ()