reformat some loplugin code

to match our more normal conventions.

Also drop the 'using std' and some other cruft

Change-Id: I02ef81c5427188bc03a20b157a57a900a9d7bf0d

compilerplugins/clang/memoryvar.cxx

@@ -101,7 +101,6 @@ bool MemoryVar::TraverseFunctionDecl(FunctionDecl * decl)
                "delete called here",
                maVarDeleteSourceRangeMap[varLoc].getBegin())
             << maVarDeleteSourceRangeMap[varLoc];
-        cout << "xxxx " << aFileName.str() << endl;
     }
     return true;
 }