Remove unneeded iostream includes.

Change-Id: I679cf41a0c768b1748ac888374e5655357ddf6e2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/54311
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/testing/image_diff/image_diff.cpp b/testing/image_diff/image_diff.cpp
index 3b098b9..00116c7 100644
--- a/testing/image_diff/image_diff.cpp
+++ b/testing/image_diff/image_diff.cpp
@@ -14,7 +14,6 @@
 #include <string.h>
 
 #include <algorithm>
-#include <iostream>
 #include <map>
 #include <string>
 #include <vector>
diff --git a/xfa/fxfa/fm2js/cxfa_fmsimpleexpression.cpp b/xfa/fxfa/fm2js/cxfa_fmsimpleexpression.cpp
index e33b852..64b99f1 100644
--- a/xfa/fxfa/fm2js/cxfa_fmsimpleexpression.cpp
+++ b/xfa/fxfa/fm2js/cxfa_fmsimpleexpression.cpp
@@ -7,7 +7,6 @@
 #include "xfa/fxfa/fm2js/cxfa_fmsimpleexpression.h"
 
 #include <algorithm>
-#include <iostream>
 #include <utility>
 
 #include "core/fxcrt/autorestorer.h"