TASK: Cleanup ExpressionNode.php

The additions that here from #18 are not necessary. The condition is also handled by the "while" loop and later comes the return. 

I think i messed stuff up because the partial fix belongs to #10

either way, it works as it is, just not super clean, thats why i removed the duplicate logic.

Author: mhsdesign

src/Parser/Ast/ExpressionNode.php

@@ -123,14 +123,8 @@ public static function fromTokens(\Iterator &$tokens, Precedence $precedence = P
         }
 
         Scanner::skipSpaceAndComments($tokens);
-        if (Scanner::isEnd($tokens) || $precedence->mustStopAt(Scanner::type($tokens))) {
-            return new self(
-                root: $root
-            );
-        }
 
         while (!Scanner::isEnd($tokens) && !$precedence->mustStopAt(Scanner::type($tokens))) {
-            Scanner::skipSpaceAndComments($tokens);
             switch (Scanner::type($tokens)) {
                 case TokenType::OPERATOR_BOOLEAN_AND:
                 case TokenType::OPERATOR_BOOLEAN_OR: