Remove cmake checks for breeze decoration

We no longer need it, now that the kcm lives in plasma-workspace

(cherry picked from commit 35a58393)

CMakeLists.txt

@@ -160,20 +160,6 @@ endif()
 
 include(ConfigureChecks.cmake)
 
-find_package(Breeze ${PROJECT_VERSION} CONFIG)
-set_package_properties(Breeze PROPERTIES
-                       TYPE OPTIONAL
-                       PURPOSE "For setting the default window decoration plugin")
-if(${Breeze_FOUND})
-    if(${BREEZE_WITH_KDECORATION})
-        set(HAVE_BREEZE_DECO true)
-    else()
-        set(HAVE_BREEZE_DECO FALSE)
-    endif()
-else()
-    set(HAVE_BREEZE_DECO FALSE)
-endif()
-
 include_directories("${CMAKE_CURRENT_BINARY_DIR}")
 
 configure_file(config-workspace.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-workspace.h)

config-workspace.h.cmake

@@ -143,13 +143,6 @@
 /* Number of bits in a file offset, on hosts where this is settable. */
 #define _FILE_OFFSET_BITS 64
 
-/* Define 1 if the Breeze window decoration was found */
-#cmakedefine HAVE_BREEZE_DECO 1
-
-#ifdef HAVE_BREEZE_DECO
-#define BREEZE_KDECORATION_PLUGIN_ID "${BREEZE_KDECORATION_PLUGIN_ID}"
-#endif
-
 /*
  * On HP-UX, the declaration of vsnprintf() is needed every time !
  */