Use that new define everywhere

Now there are no uses of DEBUG_ONLY() left :(


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1349 726aef4b-f618-498e-8847-2d620e286838

Modules.cpp

@@ -128,7 +128,7 @@ CSocket::~CSocket() {
 }
 
 void CSocket::ReachedMaxBuffer() {
-	DEBUG_ONLY(cout << GetSockName() << " == ReachedMaxBuffer()" << endl);
+	DEBUG(GetSockName() << " == ReachedMaxBuffer()");
 	PutModule("Some socket reached its max buffer limit and was closed!");
 	Close();
 }