mapi: autotools: remove unused MAPI_FILES file list

The sole user was OpenVG, which was removed couple of years ago.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/mapi/Makefile.sources

@@ -2,9 +2,6 @@
 #
 # mapi may be used in several ways
 #
-#  - In default mode, mapi implements the interface defined by mapi.h.  To use
-#    this mode, compile MAPI_FILES.
-#
 #  - In util mode, mapi provides utility functions for use with glapi.  To use
 #    this mode, compile MAPI_UTIL_FILES with MAPI_MODE_UTIL defined.
 #
@@ -30,14 +27,6 @@ MAPI_BRIDGE_FILES = \
 	entry_ppc64le_tsd.h \
 	mapi_tmp.h
 
-MAPI_FILES = \
-	entry.c \
-	stub.c \
-	stub.h \
-	table.c \
-	table.h \
-	$(MAPI_UTIL_FILES)
-
 MAPI_GLAPI_FILES = \
 	entry.c \
 	mapi_glapi.c \