c function to remove character in string

str_remove.c

static void str_remove(void *s, unsigned char target) {
	unsigned char* str = (unsigned char*) s;
    int len = strlen(str);
    int i, j = 0;

    for (i = 0; i < len; i++) {
        if (str[i] != target) {
            str[j++] = str[i];
        }
    }

    str[j] = 0x0;
}