Remove unset _GUILE_LD_LIBRARY_PATH from GncAddSchemeTargets.

common/cmake_modules/GncAddSchemeTargets.cmake

@@ -123,10 +123,10 @@ function(gnc_add_scheme_targets _TARGET _SOURCE_FILES _OUTPUT_DIR _GUILE_DEPENDS
         file(TO_CMAKE_PATH "$ENV{PATH}" fpath)
         set(LIBRARY_PATH "PATH=\"${BINDIR_BUILD};${fpath}\"")
       else (MINGW64)
-        set (LIBRARY_PATH "LD_LIBRARY_PATH=${LIBDIR_BUILD}:${LIBDIR_BUILD}/gnucash:${_GUILE_LD_LIBRARY_PATH}")
+        set (LIBRARY_PATH "LD_LIBRARY_PATH=${LIBDIR_BUILD}:${LIBDIR_BUILD}/gnucash)
       endif (MINGW64)
       if (APPLE)
-        set (LIBRARY_PATH "DYLD_LIBRARY_PATH=${LIBDIR_BUILD}:${LIBDIR_BUILD}/gnucash:${_GUILE_LD_LIBRARY_PATH}")
+        set (LIBRARY_PATH "DYLD_LIBRARY_PATH=${LIBDIR_BUILD}:${LIBDIR_BUILD}/gnucash")
       endif (APPLE)
       set(_GNC_MODULE_PATH "")
       if(MINGW64)