modules: cleanup superfluous virtual keywords

These methods are not overriding anything or being overridden anywhere.

modules/awaystore.cpp

@@ -346,7 +346,7 @@ public:
 		return(sRet);
 	}
 
-	virtual void Away(bool bForce = false, const CString & sReason = "")
+	void Away(bool bForce = false, const CString & sReason = "")
 	{
 		if ((!m_bIsAway) || (bForce))
 		{
@@ -370,7 +370,7 @@ public:
 		}
 	}
 
-	virtual void Back(bool bUsePrivMessage = false)
+	void Back(bool bUsePrivMessage = false)
 	{
 		PutIRC("away");
 		m_bIsAway = false;

modules/modtcl.cpp

@@ -146,7 +146,7 @@ public:
 		}
 	}
 
-	virtual void TclUpdate() {
+	void TclUpdate() {
 		while (Tcl_DoOneEvent(TCL_DONT_WAIT)) {}
 		i = Tcl_Eval(interp,"Binds::ProcessTime");
 		if (i != TCL_OK) {

modules/partyline.cpp

@@ -443,7 +443,7 @@ public:
 		}
 	}
 
-	virtual EModRet HandleMessage(const CString& sCmd, const CString& sTarget, const CString& sMessage) {
+	EModRet HandleMessage(const CString& sCmd, const CString& sTarget, const CString& sMessage) {
 		if (sTarget.empty()) {
 			return CONTINUE;
 		}

modules/schat.cpp

@@ -81,14 +81,14 @@ public:
 	virtual void ReadLine(const CS_STRING & sLine) override;
 	virtual void Disconnected() override;
 
-	virtual void AddLine(const CString & sLine)
+	void AddLine(const CString & sLine)
 	{
 		m_vBuffer.insert(m_vBuffer.begin(), sLine);
 		if (m_vBuffer.size() > 200)
 			m_vBuffer.pop_back();
 	}
 
-	virtual void DumpBuffer()
+	void DumpBuffer()
 	{
 		if (m_vBuffer.empty()) {
 			// Always show a message to the user, so he knows
@@ -386,7 +386,7 @@ public:
 		return(CONTINUE);
 	}
 
-	virtual void RemoveMarker(const CString & sNick)
+	void RemoveMarker(const CString & sNick)
 	{
 		map< CString,pair< u_long,u_short > >::iterator it = m_siiWaitingChats.find(sNick);
 		if (it != m_siiWaitingChats.end())

modules/stickychan.cpp

@@ -88,7 +88,7 @@ public:
 		PutModule(" -- End of List");
 	}
 
-	virtual void RunJob()
+	void RunJob()
 	{
 		CIRCNetwork* pNetwork = GetNetwork();
 		if (!pNetwork->GetIRCSock())