docs: Remove builder/index-parse.h from documented files.

Breaks things when building from clean.

Makefile.am

@@ -308,7 +308,7 @@ ChangeLog: configure.ac
 docs/C_SOURCE_FILES: configure.ac
 	rm -f $@ $@-t
 	find $(DIST_SUBDIRS) -name '*.[ch]' | \
-	grep -v -E '^(builder/index-parse.c|builder/index-scan.c|examples/|gnulib/|gobject/|perl/|tests/|test-data/)' | \
+	grep -v -E '^(builder/index-parse\.|builder/index-scan\.|examples/|gnulib/|gobject/|perl/|tests/|test-data/)' | \
 	grep -v -E '/((guestfs|rc)_protocol\.c)$$' | \
 	grep -v -E '.*/errnostring\.c$$' | \
 	grep -v -E '.*-gperf\.c$$' | \

docs/C_SOURCE_FILES

@@ -1,5 +1,4 @@
 align/scan.c
-builder/index-parse.h
 builder/index-parser-c.c
 builder/index-struct.c
 builder/index-struct.h