[cleanup] Remove some leftover strong mode code from the parser

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 0e97efdf94793c904171b4db9495dd39b7b52b53..2bac9bf2290894cd46838e9ef30e21c994e3ee0f 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -2721,7 +2721,6 @@ Statement* Parser::ParseReturnStatement(bool* ok) {
   // reported (underlining).
   Expect(Token::RETURN, CHECK_OK);
   Scanner::Location loc = scanner()->location();
-  function_state_->set_return_location(loc);
 
   Token::Value tok = peek();
   Statement* result;