Fixup: Cmake delete no longer reuqired variable in enable_languages

Author: ptheywood

cmake/enable_languages.cmake

@@ -15,9 +15,6 @@ include_guard(GLOBAL)
 include(CheckLanguage)
 include(CheckSourceCompiles)
 
-# Store the location of this file, so relative paths can be used inside macros (which exist in the scope of the caller)
-set(_FLAMEGPU_ENABLE_LANGUAGES_DIR "${CMAKE_CURRENT_LIST_DIR}")
-
 # Define the minimum supported CUDA and HIP versions
 set(MINIMUM_SUPPORTED_CUDA_VERSION 12.4)
 set(MINIMUM_SUPPORTED_HIP_VERSION 7.0)  # patch version differs from the rocm package