Vala{Bin,Lib}CommonRules.cmake: --thread option is deprecated.

ValaBinCommonRules.cmake

@@ -7,7 +7,7 @@ SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/run") # Avoid of "dll n
 
 VALA_PRECOMPILE (VALA_C ${BinSources}
                  PACKAGES ${BinPackages}
-                 OPTIONS ${BinValaOpts} --thread ${VALA_DEBUG}
+                 OPTIONS ${BinValaOpts} ${VALA_DEBUG}
                  CUSTOM_VAPIS ${BinCustomVapis}
                  GENERATE_VAPI
                  GENERATE_HEADER

ValaLibCommonRules.cmake

@@ -17,7 +17,7 @@ ENDIF (WIN32)
 
 VALA_PRECOMPILE (VALA_C ${LibSources}
                  PACKAGES ${LibPackages}
-                 OPTIONS --thread ${LibValaOpts} ${VALA_DEBUG} ${export_vaapi}
+                 OPTIONS ${LibValaOpts} ${VALA_DEBUG} ${export_vaapi}
                  CUSTOM_VAPIS ${LibCustomVapis}
                  GENERATE_VAPI
                  GENERATE_HEADER ${generate_header}