Removing unused variable.

Author: ppisl

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/str/StringBuiltins.java

@@ -1547,7 +1547,6 @@ abstract static class TitleNode extends PythonUnaryBuiltinNode {
         @Specialization
         @TruffleBoundary
         public String doTitle(String self) {
-            int len = self.length();
             boolean shouldBeLowerCase = false;
             boolean translated;
             StringBuilder converted = new StringBuilder();