Remove NS_IMAPMESSAGERESOURCE_CID definition which doesn't belong here.

mailnews/db/msgdb/build/nsMsgDBCID.h

@@ -38,9 +38,4 @@
 { 0x9e4b07ee, 0xe980, 0x11d2,                  \
     { 0x00, 0x60, 0xb0, 0xfc, 0x04, 0xb7 } }
 
-// 225310c0-f69e-11d2-8d6d-00805f8a6617
-#define NS_IMAPMESSAGERESOURCE_CID \
-	{0x225310c0, 0xf69e, 0x11d2, \
-	{0x8d, 0x6d, 0x00, 0x80, 0x5f, 0x8a, 0x66, 0x17}}
-
 #endif