Adds missing '#include <iostream>' to a few files.

Removes '#include <iostream>' from Location.h which leads to
necessity to add missing imports.

Test: mma
Change-Id: I1b562ce1a08b7612c55f7eb62e41ca54d3292f80
diff --git a/ConstantExpression.cpp b/ConstantExpression.cpp
index 5388acf..5f24f1f 100644
--- a/ConstantExpression.cpp
+++ b/ConstantExpression.cpp
@@ -20,6 +20,7 @@
 #include <android-base/parseint.h>
 #include <stdio.h>
 #include <algorithm>
+#include <iostream>
 #include <sstream>
 #include <string>