revert https://github.com/nzjrs/osm-gps-map/commit/b3f5c1f7cc74677d8b71aaafa68f8034cdbc93d7
Index: configure.ac
--- configure.ac.orig
+++ configure.ac
@@ -4,15 +4,11 @@ AC_INIT([osm-gps-map],
         [http://github.com/nzjrs/osm-gps-map/issues],
         [osm-gps-map])
 
-AX_IS_RELEASE([git-directory])
-
 AM_INIT_AUTOMAKE([1.11 foreign subdir-objects parallel-tests])
 
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([src/osm-gps-map.h])
 AC_CONFIG_MACRO_DIR([m4])
-
-AX_REQUIRE_DEFINED([GTK_DOC_CHECK])
 
 AM_PROG_CC_C_O