tree-wide: Remove dead code

This code seems to not be used anywhere at all, so let's drop it.

Follow up for ba8d00e859
Follow up for 85686b37b0
Follow up for aff853f8ea
Follow up for 36dad381a2

src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.c

@@ -30,33 +30,6 @@ int crypt_dump_buffer_to_hex_string(
         return 0;
 }
 
-int crypt_dump_hex_string(const char *hex_str, char **ret_dump_str) {
-
-        int r;
-        size_t len;
-        _cleanup_free_ char *dump_str = NULL;
-
-        assert(hex_str);
-        assert(ret_dump_str);
-
-        len = strlen(hex_str) >> 1;
-
-        for (size_t i = 0; i < len; i++) {
-                /* crypt_dump() breaks line after every
-                 * 16th couple of chars in dumped hexstring */
-                r = strextendf_with_separator(
-                        &dump_str,
-                        (i && !(i % 16)) ? CRYPT_DUMP_LINE_SEP : " ",
-                        "%.2s", hex_str + (i<<1));
-                if (r < 0)
-                        return r;
-        }
-
-        *ret_dump_str = TAKE_PTR(dump_str);
-
-        return 0;
-}
-
 int crypt_normalize_pin(const void *pin, size_t pin_size, char **ret_pin_string) {
         assert(pin || pin_size == 0);
         assert(ret_pin_string);

src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.h

@@ -35,6 +35,4 @@ int crypt_dump_buffer_to_hex_string(
                 size_t buf_size,
                 char **ret_dump_str);
 
-int crypt_dump_hex_string(const char *hex_str, char **ret_dump_str);
-
 int crypt_normalize_pin(const void *pin, size_t pin_size, char **ret_pin_string);