Removed virtual toString from Statement

src/Parser/Statement/StatementInvalid.cpp

@@ -5,10 +5,6 @@
 StatementInvalid::StatementInvalid(shared_ptr<Token> token, string message):
 Statement(StatementKind::INVALID), token(token), message(message) { }
 
-string StatementInvalid::toString(int indent) {
-    return "Error for token " + token->toString() + " at " + to_string(token->getLine()) + ":" + to_string(token->getColumn()) + ": " + message + "\n";
-}
-
 string StatementInvalid::getMessage() {
     return message;
 }