Remove redundant check

Author: antaljanosbenjamin

CMakeLists.txt

@@ -617,9 +617,7 @@ if (COMPILER_CACHE STREQUAL "chcache" AND CHCACHE_EXECUTABLE_PATH STREQUAL "")
     message(STATUS "Adding chcache as dependency to all other targets")
     get_all_targets(all_targets)
     set(chcache_targets _cargo-build_chcache cargo-build_chcache cargo-prebuild_chcache)
-    if(NOT TARGET cargo-build_chcache)
-        message(FATAL_ERROR "Building chcache is disabled and CHCACHE_EXECUTABLE_PATH is not set, cannot use chcache as compiler cache.")
-    endif()
+
     foreach(target ${all_targets})
         if (target IN_LIST chcache_targets)
             continue()

rust/CMakeLists.txt

@@ -1,7 +1,2 @@
 add_subdirectory (workspace)
-
-option(ENABLE_CHCACHE "Enable chcache" ${ENABLE_RUST})
-
-if (ENABLE_CHCACHE)
-    add_subdirectory (chcache)
-endif()
+add_subdirectory (chcache)