Remove obsolete code

doc/tags/guard.rst

@@ -1,10 +1,6 @@
 ``guard``
 =========
 
-.. versionadded:: 3.13
-
-    The ``guard`` tag was added in Twig 3.15.
-
 The ``guard`` statement checks if some Twig callables are available at
 **compilation time** to bypass code compilation that would otherwise fail.
 

doc/templates.rst

@@ -967,11 +967,6 @@ The following operators don't fit into any of the other categories:
 
       {{ people|map(first_name_fn)|join(', ') }}
 
-  .. versionadded:: 3.15
-
-    Arrow function support for functions, macros, and method calls was added in
-    Twig 3.15 (filters and tests were already supported).
-
 Operators
 ~~~~~~~~~
 

src/ExpressionParser.php

@@ -87,10 +87,6 @@ class ExpressionParser
 
     public function parseExpression($precedence = 0)
     {
-        if (func_num_args() > 1) {
-            trigger_deprecation('twig/twig', '3.15', 'Passing a second argument ($allowArrow) to "%s()" is deprecated.', __METHOD__);
-        }
-
         if ($arrow = $this->parseArrow()) {
             return $arrow;
         }
@@ -664,10 +660,6 @@ class ExpressionParser
      */
     public function parseArguments($namedArguments = false, $definition = false)
     {
-        if (func_num_args() > 2) {
-            trigger_deprecation('twig/twig', '3.15', 'Passing a third argument ($allowArrow) to "%s()" is deprecated.', __METHOD__);
-        }
-
         $args = [];
         $stream = $this->parser->getStream();