Minor code improvements.

Author: udan11

src/Components/PartitionDefinition.php

@@ -10,7 +10,6 @@
  */
 namespace SqlParser\Components;
 
-use SqlParser\Context;
 use SqlParser\Component;
 use SqlParser\Parser;
 use SqlParser\Token;

src/Lexer.php

@@ -171,7 +171,7 @@ class Lexer
      */
     public static function getTokens($str, $strict = false, $delimiter = null)
     {
-        $lexer = new Lexer($str);
+        $lexer = new Lexer($str, $strict, $delimiter);
         return $lexer->list;
     }