Remove unused function convert_sha1_file()

convert_sha1_file() became unused by the previous patch -- remove it.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

cache.h

@@ -592,7 +592,6 @@ extern void trace_argv_printf(const char **argv, int count, const char *format,
 /* convert.c */
 extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
 extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
-extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size);
 
 /* diff.c */
 extern int diff_auto_refresh_index;

convert.c

@@ -687,18 +687,3 @@ char *convert_to_working_tree(const char *path, const char *src, unsigned long *
 
 	return buf;
 }
-
-void *convert_sha1_file(const char *path, const unsigned char *sha1,
-                        unsigned int mode, enum object_type *type,
-                        unsigned long *size)
-{
-	void *buffer = read_sha1_file(sha1, type, size);
-	if (S_ISREG(mode) && buffer) {
-		void *converted = convert_to_working_tree(path, buffer, size);
-		if (converted) {
-			free(buffer);
-			buffer = converted;
-		}
-	}
-	return buffer;
-}