remove extraneous using namespace android and deprecate utils/Log.h

This namespace is not used by this file and its declaration is removed
in a separate CL from utils/Log.h, which is the only place it is
defined, so we must remove this extraneous line.

Also, since that separate CL is deprecating utils/Log.h in favor of
log/log.h, we make the switch to the new header.

Test: Build

Change-Id: Iac4bc8faffbd2d68dc4ccccaf569db0c5a13a7bc

libwvdrmengine/mediadrm/src_hidl/WVGenericCryptoInterface.cpp

@@ -4,7 +4,7 @@
 
 //#define LOG_NDEBUG 0
 #define LOG_TAG "WVCdm"
-#include <utils/Log.h>
+#include <log/log.h>
 
 #include "WVGenericCryptoInterface.h"
 
@@ -12,7 +12,6 @@
 
 namespace wvdrm {
 
-using namespace android;
 using namespace std;
 using namespace wvcdm;