strbuf: remove prefixcmp() and suffixcmp()

As starts_with() and ends_with() have been used to
replace prefixcmp() and suffixcmp() respectively,
we can now remove them.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

git-compat-util.h

@@ -351,9 +351,7 @@ extern void set_error_routine(void (*routine)(const char *err, va_list params));
 extern void set_die_is_recursing_routine(int (*routine)(void));
 
 extern int starts_with(const char *str, const char *prefix);
-extern int prefixcmp(const char *str, const char *prefix);
 extern int ends_with(const char *str, const char *suffix);
-extern int suffixcmp(const char *str, const char *suffix);
 
 static inline const char *skip_prefix(const char *str, const char *prefix)
 {

strbuf.c

@@ -10,15 +10,6 @@ int starts_with(const char *str, const char *prefix)
 			return 0;
 }
 
-int prefixcmp(const char *str, const char *prefix)
-{
-	for (; ; str++, prefix++)
-		if (!*prefix)
-			return 0;
-		else if (*str != *prefix)
-			return (unsigned char)*prefix - (unsigned char)*str;
-}
-
 int ends_with(const char *str, const char *suffix)
 {
 	int len = strlen(str), suflen = strlen(suffix);
@@ -28,15 +19,6 @@ int ends_with(const char *str, const char *suffix)
 		return !strcmp(str + len - suflen, suffix);
 }
 
-int suffixcmp(const char *str, const char *suffix)
-{
-	int len = strlen(str), suflen = strlen(suffix);
-	if (len < suflen)
-		return -1;
-	else
-		return strcmp(str + len - suflen, suffix);
-}
-
 /*
  * Used as the default ->buf value, so that people can always assume
  * buf is non NULL and ->buf is NUL terminated even for a freshly