src/pmdas/trace/GNUmakefile: remove silly app?.c -> tmp.c rewriting
src/pmdas/trace/GNUmakefile: remove silly app?.c -> tmp.c rewriting

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp