Prevent test libraries from being installed and remove tests that lack dependencies to build.
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -173,6 +173,7 @@ configure_file(
   @ONLY
 )
 
+if(0)
 install(TARGETS mir-test-assist
   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
 )
@@ -200,6 +201,7 @@ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/mirtest.pc
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/mirtest-internal.pc
   DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
 )
+endif()
 
 mir_add_memcheck_test()
 mir_add_detect_fd_leaks_test()
--- a/tests/mir_test_framework/CMakeLists.txt
+++ b/tests/mir_test_framework/CMakeLists.txt
@@ -55,7 +55,6 @@ add_library(mir-public-test-framework OBJECT
   ${PROJECT_SOURCE_DIR}/tests/include/mir_test_framework/open_wrapper.h
   test_server.cpp  ${PROJECT_SOURCE_DIR}/include/test/miral/test_server.h
   test_display_server.cpp  ${PROJECT_SOURCE_DIR}/include/test/miral/test_display_server.h
-  test_wlcs_display_server.cpp ${PROJECT_SOURCE_DIR}/include/test/miral/test_wlcs_display_server.h
   ${PROJECT_SOURCE_DIR}/tests/include/mir_test_framework/mmap_wrapper.h
   mmap_wrapper.cpp
   window_management_test_harness.cpp ${PROJECT_SOURCE_DIR}/tests/include/mir_test_framework/window_management_test_harness.h
@@ -183,8 +182,10 @@ set_target_properties(
   LINK_FLAGS "-Wl,--version-script,${server_symbol_map}"
 )
 
+if(0)
 install(TARGETS mirplatformgraphicsstub LIBRARY DESTINATION ${MIR_SERVER_PLATFORM_PATH})
 install(TARGETS mirplatforminputstub LIBRARY DESTINATION ${MIR_SERVER_PLATFORM_PATH})
+endif()
 
 add_library(
   mirplatformgraphicsthrow MODULE