Remove unused private member variable uncovered by the recent changes to clang's -Wunused-private-field.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160584 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp b/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp
index 4156e4f..58a4bba 100644
--- a/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp
+++ b/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp
@@ -31,7 +31,6 @@
     const std::string OutputFile;
     const LangOptions &LangOpts;
     OwningPtr<PathDiagnosticConsumer> SubPD;
-    bool flushed;
     const bool SupportsCrossFileDiagnostics;
   public:
     PlistDiagnostics(const std::string& prefix, const LangOptions &LangOpts,
@@ -61,7 +60,7 @@
                                    const LangOptions &LO,
                                    bool supportsMultipleFiles,
                                    PathDiagnosticConsumer *subPD)
-  : OutputFile(output), LangOpts(LO), SubPD(subPD), flushed(false),
+  : OutputFile(output), LangOpts(LO), SubPD(subPD),
     SupportsCrossFileDiagnostics(supportsMultipleFiles) {}
 
 PathDiagnosticConsumer*