Fix missed change of cmake_flags

Author: omjavaid

lnt/tests/test_suite.py

@@ -525,7 +525,6 @@ def _configure(self, path, extra_cmake_defs=[], execute=True):
             self.remote_run = True
 
         # Prepare cmake cache if requested:
-        cmake_flags = []
         for cache in self.opts.cmake_cache:
             if cache == "":
                 continue