remove kIDOMSelectionIID since it's unused (bug 117927; r=glazou, rs=shaver)

editor/libeditor/base/IMETextTxn.cpp

@@ -51,7 +51,6 @@
 // #define DEBUG_IMETXN
 static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
 
-static NS_DEFINE_IID(kIDOMSelectionIID, NS_ISELECTION_IID);
 
 nsIAtom *IMETextTxn::gIMETextTxnName = nsnull;
 

editor/libeditor/base/InsertTextTxn.cpp

@@ -42,8 +42,6 @@
 #include "nsISelection.h"
 #include "EditAggregateTxn.h"
 
-static NS_DEFINE_IID(kIDOMSelectionIID, NS_ISELECTION_IID);
-
 #ifdef NS_DEBUG
 static PRBool gNoisy = PR_FALSE;
 #else