Git: Remove unused BranchModel::client()

Change-Id: I6465360d73b1d7580a922b295965d3c836d54ebe
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/branchmodel.cpp

@@ -509,11 +509,6 @@ QString BranchModel::workingDirectory() const
     return d->workingDirectory;
 }
 
-GitClient *BranchModel::client() const
-{
-    return d->client;
-}
-
 QModelIndex BranchModel::currentBranch() const
 {
     if (!d->currentBranch)

src/plugins/git/branchmodel.h

@@ -66,7 +66,6 @@ public:
     void renameTag(const QString &oldName, const QString &newName);
 
     QString workingDirectory() const;
-    GitClient *client() const;
 
     QModelIndex currentBranch() const;
     QString fullName(const QModelIndex &idx, bool includePrefix = false) const;