CMake: remove dead plugin-related code.

As of 4090a88c97 (2020) these variables
are no longer used, I just forgot to delete them.

CMakeLists.txt

@@ -732,21 +732,6 @@ set(MAGNUM_PLUGINS_AUDIOIMPORTER_DEBUG_LIBRARY_INSTALL_DIR ${MAGNUM_PLUGINS_DEBU
 set(MAGNUM_PLUGINS_AUDIOIMPORTER_RELEASE_BINARY_INSTALL_DIR ${MAGNUM_PLUGINS_RELEASE_BINARY_INSTALL_DIR}/audioimporters)
 set(MAGNUM_PLUGINS_AUDIOIMPORTER_RELEASE_LIBRARY_INSTALL_DIR ${MAGNUM_PLUGINS_RELEASE_LIBRARY_INSTALL_DIR}/audioimporters)
 
-# Plugin dirs based on whether we are in debug or release build, needed by some
-# command-line tools
-if(CORRADE_TARGET_WINDOWS)
-    set(MAGNUM_PLUGINS_DEBUG_DIR_INIT ${CMAKE_INSTALL_PREFIX}/${MAGNUM_PLUGINS_DEBUG_BINARY_INSTALL_DIR})
-    set(MAGNUM_PLUGINS_RELEASE_DIR_INIT ${CMAKE_INSTALL_PREFIX}/${MAGNUM_PLUGINS_RELEASE_BINARY_INSTALL_DIR})
-else()
-    set(MAGNUM_PLUGINS_DEBUG_DIR_INIT ${CMAKE_INSTALL_PREFIX}/${MAGNUM_PLUGINS_DEBUG_LIBRARY_INSTALL_DIR})
-    set(MAGNUM_PLUGINS_RELEASE_DIR_INIT ${CMAKE_INSTALL_PREFIX}/${MAGNUM_PLUGINS_RELEASE_LIBRARY_INSTALL_DIR})
-endif()
-if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-    set(MAGNUM_PLUGINS_DIR_INIT ${MAGNUM_PLUGINS_DEBUG_DIR_INIT})
-else()
-    set(MAGNUM_PLUGINS_DIR_INIT ${MAGNUM_PLUGINS_RELEASE_DIR_INIT})
-endif()
-
 # Make these paths configurable from outside. This is *not* PATH, because CMake
 # always converts the path to an absolute location internally, making it
 # impossible to specify relative paths there. Sorry in advance for not having

modules/FindMagnum.cmake

@@ -361,24 +361,10 @@ if(NOT TARGET Magnum::Magnum)
     # information to guess also build type of dynamic plugins
     if(MAGNUM_LIBRARY_DEBUG AND MAGNUM_LIBRARY_RELEASE)
         set(MAGNUM_LIBRARY ${MAGNUM_LIBRARY_RELEASE})
-        get_filename_component(_MAGNUM_PLUGINS_DIR_PREFIX ${MAGNUM_LIBRARY_DEBUG} PATH)
-        if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-            set(_MAGNUM_PLUGINS_DIR_SUFFIX "-d")
-        endif()
     elseif(MAGNUM_LIBRARY_DEBUG)
         set(MAGNUM_LIBRARY ${MAGNUM_LIBRARY_DEBUG})
-        get_filename_component(_MAGNUM_PLUGINS_DIR_PREFIX ${MAGNUM_LIBRARY_DEBUG} PATH)
-        set(_MAGNUM_PLUGINS_DIR_SUFFIX "-d")
     elseif(MAGNUM_LIBRARY_RELEASE)
         set(MAGNUM_LIBRARY ${MAGNUM_LIBRARY_RELEASE})
-        get_filename_component(_MAGNUM_PLUGINS_DIR_PREFIX ${MAGNUM_LIBRARY_RELEASE} PATH)
-    endif()
-
-    # On DLL platforms the plugins are stored in bin/ instead of lib/, modify
-    # _MAGNUM_PLUGINS_DIR_PREFIX accordingly
-    if(CORRADE_TARGET_WINDOWS)
-        get_filename_component(_MAGNUM_PLUGINS_DIR_PREFIX ${_MAGNUM_PLUGINS_DIR_PREFIX} PATH)
-        set(_MAGNUM_PLUGINS_DIR_PREFIX ${_MAGNUM_PLUGINS_DIR_PREFIX}/bin)
     endif()
 
     if(MAGNUM_LIBRARY_RELEASE)