fix: scanner.c warning

Author: blindFS

src/scanner.c

@@ -94,11 +94,9 @@ static bool scan_raw_string_begin(TSLexer *lexer, Scanner *s) {
 }
 
 static bool scan_raw_string_content(TSLexer *lexer, Scanner *s) {
-    uint32_t len = 0;
     while (!eof) {
         uint32_t num = consume_until(lexer, '\'');
         lexer->mark_end(lexer);
-        len += num;
         adv;
         uint8_t level = consume_chars(lexer, '#');
         if (level == s->level) {