remove IF EXISTS gitrev.h (was my misunderstanding of the spec)
@@ -991,6 +991,4 @@ IF ("${VERSION_PRERELEASE}" STREQUAL "-DEV" AND IS_GIT_REPO)
IF (TARGET h2olog)
ADD_DEPENDENCIES(h2olog gitrev)
ENDIF (TARGET h2olog)
-ELSEIF (EXISTS include/h2o/gitrev.h)
- ADD_DEFINITIONS("-DH2O_HAS_GITREV_H")
ENDIF ()
