No longer build mct for unit tests

This was only needed by the cpl7 unit tests; since we are no longer
building / running the cpl7 unit tests, we can stop building mct, too.

CMakeLists.txt

@@ -22,73 +22,6 @@ include_directories(${NetCDF_C_INCLUDE_DIRS} ${NetCDF_Fortran_INCLUDE_DIRS})
 # TODO: Some of the below should be done in the relevant directories, not in
 # this top level CMakeLists.
 
-# ------------------------------------------------------------------------
-# Build mct
-# ------------------------------------------------------------------------
-if (EXISTS ${SRC_ROOT}/libraries/mct)
-  set(MCT_ROOT "${SRC_ROOT}/libraries/mct")
-else()
-  set(MCT_ROOT "${SRC_ROOT}/externals/mct")
-endif()
-
-if (USE_MPI_SERIAL)
-  set(ENABLE_MPI_SERIAL "--enable-mpiserial")
-else()
-  set(ENABLE_MPI_SERIAL "")
-endif()
-
-ExternalProject_add(mct_project
-  PREFIX ${CMAKE_CURRENT_BINARY_DIR}
-  SOURCE_DIR ${MCT_ROOT}
-  BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/mct
-  CONFIGURE_COMMAND ${MCT_ROOT}/configure ${ENABLE_MPI_SERIAL} --enable-debugging --prefix=${CMAKE_CURRENT_BINARY_DIR} CC=${CMAKE_C_COMPILER} FC=${CMAKE_Fortran_COMPILER} CFLAGS=${CFLAGS} FCFLAGS=${FFLAGS} SRCDIR=${MCT_ROOT} DEBUG="-g"
-  BUILD_COMMAND $(MAKE) SRCDIR=${MCT_ROOT}
-  # Leave things in <BINARY_DIR> rather than "installing", because we have
-  # no need to move things around inside of the CMake binary directory. Also,
-  # mpi-serial doesn't install properly in the out-of-source build
-  INSTALL_COMMAND :
-  )
-# This copy_makefiles step is needed because mct currently doesn't support an
-# out-of-source build. I am replicating what is done for the CIME system build.
-ExternalProject_add_step(mct_project copy_makefiles
-  DEPENDEES configure
-  DEPENDERS build
-  WORKING_DIRECTORY <BINARY_DIR>
-  COMMAND cp -p <SOURCE_DIR>/Makefile .
-  COMMAND mkdir -p mct
-  COMMAND cp -p <SOURCE_DIR>/mct/Makefile mct/
-  COMMAND mkdir -p mpeu
-  COMMAND cp -p <SOURCE_DIR>/mpeu/Makefile mpeu/
-  )
-if (USE_MPI_SERIAL)
-  ExternalProject_add_step(mct_project copy_mpi_serial_files
-    DEPENDEES configure
-    DEPENDERS build
-    WORKING_DIRECTORY <BINARY_DIR>
-    COMMAND mkdir -p mpi-serial
-    COMMAND cp -p <SOURCE_DIR>/mpi-serial/Makefile mpi-serial/
-    COMMAND cp <SOURCE_DIR>/mpi-serial/mpif.h mpi-serial/
-    COMMAND cp <SOURCE_DIR>/mpi-serial/mpi.h mpi-serial/
-    )
-endif()
-
-# Tell cmake to look for libraries & mod files here, because this is where we built libraries
-include_directories(${CMAKE_CURRENT_BINARY_DIR}/mct/mct)
-include_directories(${CMAKE_CURRENT_BINARY_DIR}/mct/mpeu)
-link_directories(${CMAKE_CURRENT_BINARY_DIR}/mct/mct)
-link_directories(${CMAKE_CURRENT_BINARY_DIR}/mct/mpeu)
-if (USE_MPI_SERIAL)
-  # We need to list the mpi-serial include directory before system-level
-  # directories so that we're sure to use mpi-serial's mpif.h instead of
-  # an mpif.h from a system path.
-  include_directories(BEFORE ${CMAKE_CURRENT_BINARY_DIR}/mct/mpi-serial)
-  link_directories(BEFORE ${CMAKE_CURRENT_BINARY_DIR}/mct/mpi-serial)
-endif()
-
-# ------------------------------------------------------------------------
-# Done MCT build
-# ------------------------------------------------------------------------
-
 # Now a bunch of includes for share code.
 
 # csm_share (we don't build it here because it seems to be built differently