clean-up libutils includes

moved Foo.h as first include of Foo.cpp, and
removed redundant includes.

Made NativeHandle non virtual.


Test: run & compile
Bug: n/a

Change-Id: I37fa746cd42c9ba23aba181f84cb6c619386406a
diff --git a/libutils/LinearTransform.cpp b/libutils/LinearTransform.cpp
index 138ce8b..d2e91a8 100644
--- a/libutils/LinearTransform.cpp
+++ b/libutils/LinearTransform.cpp
@@ -16,10 +16,9 @@
 
 #define __STDC_LIMIT_MACROS
 
-#include <assert.h>
-#include <stdint.h>
-
 #include <utils/LinearTransform.h>
+#include <assert.h>
+
 
 // disable sanitize as these functions may intentionally overflow (see comments below).
 // the ifdef can be removed when host builds use clang.