Clang: Remove unused member field

Change-Id: I73875f538dbf08dd41cc55f3686b2cf2162a59f5
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/libs/clangsupport/clangcodemodelconnectionclient.cpp

@@ -45,8 +45,7 @@ ClangCodeModelConnectionClient::ClangCodeModelConnectionClient(
     : ConnectionClient(Utils::TemporaryDirectory::masterDirectoryPath()
                        + QStringLiteral("/ClangBackEnd-")
                        + currentProcessId()),
-      m_serverProxy(client, nullptr),
-      m_client(client)
+      m_serverProxy(client, nullptr)
 {
     m_processCreator.setTemporaryDirectoryPattern("clangbackend-XXXXXX");
     m_processCreator.setArguments({connectionName()});

src/libs/clangsupport/clangcodemodelconnectionclient.h

@@ -45,7 +45,6 @@ protected:
 
 private:
     ClangCodeModelServerProxy m_serverProxy;
-    ClangCodeModelClientInterface *m_client;
 };
 
 } // namespace ClangBackEnd