Utils/Ssh: Move SshRemoteProces::isRunning() to QtcProcess base

... and use it on a few places.

Change-Id: Id2cea709e355a46821a720e593740ac032888ced
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/libs/ssh/sftpsession.cpp

@@ -97,7 +97,7 @@ struct SftpSession::SftpSessionPrivate
             return;
         if (pendingCommands.empty())
             return;
-        QTC_ASSERT(sftpProc.state() == QProcess::Running, return);
+        QTC_ASSERT(sftpProc.isRunning(), return);
         activeCommand = pendingCommands.dequeue();
 
         // The second newline forces the prompt to appear after the command has finished.

src/libs/ssh/sshremoteprocess.cpp

@@ -116,11 +116,6 @@ void SshRemoteProcess::start()
     doStart();
 }
 
-bool SshRemoteProcess::isRunning() const
-{
-    return state() == QProcess::Running;
-}
-
 Utils::CommandLine SshRemoteProcess::fullLocalCommandLine() const
 {
     Utils::CommandLine cmd{SshSettings::sshFilePath()};

src/libs/ssh/sshremoteprocess.h

@@ -47,7 +47,6 @@ public:
     void requestX11Forwarding(const QString &displayName);
     void start();
 
-    bool isRunning() const;
     Utils::CommandLine fullLocalCommandLine() const;
 
 signals: