In sys/dev/en/midway.c, #if 0 an unused static function.

MFC after:	3 days

sys/dev/en/midway.c

@@ -344,6 +344,7 @@ en_k2sz(int k)
 }
 #define en_log2(X) en_k2sz(X)
 
+#if 0
 /*
  * en_b2sz: convert a DMA burst code to its byte size
  */
@@ -365,6 +366,7 @@ en_b2sz(int b)
 	}
 	return (0);
 }
+#endif
 
 /*
  * en_sz2b: convert a burst size (bytes) to DMA burst code