Remove duplicate array keys from PhpTokenizer.php

Detected via static analysis

When there are duplicate array keys, the last entry takes precedence
(e.g. the removed T_EXIT line had the wrong value)

Author: TysonAndre

src/PhpTokenizer.php

@@ -148,7 +148,6 @@ public static function getTokensArrayFromContent(
         T_CONTINUE => TokenKind::ContinueKeyword,
         T_DECLARE => TokenKind::DeclareKeyword,
         T_DEFAULT => TokenKind::DefaultKeyword,
-        T_EXIT => TokenKind::DieKeyword,
         T_DO => TokenKind::DoKeyword,
         T_ECHO => TokenKind::EchoKeyword,
         T_ELSE => TokenKind::ElseKeyword,
@@ -267,8 +266,6 @@ public static function getTokensArrayFromContent(
 
         T_DNUMBER => TokenKind::FloatingLiteralToken,
 
-        T_CONSTANT_ENCAPSED_STRING => TokenKind::StringLiteralToken,
-
         T_OPEN_TAG => TokenKind::ScriptSectionStartTag,
         T_OPEN_TAG_WITH_ECHO => TokenKind::ScriptSectionStartTag,
         T_CLOSE_TAG => TokenKind::ScriptSectionEndTag,