Remove switch(4) remains from netisr.h

[Vitaliy Makkoveev]

Index: sys/net/netisr.h
===================================================================
RCS file: /cvs/src/sys/net/netisr.h,v
retrieving revision 1.58
diff -u -p -r1.58 netisr.h
--- sys/net/netisr.h    29 Jun 2022 09:08:07 -0000      1.58
+++ sys/net/netisr.h    29 Jun 2022 12:23:44 -0000
@@ -49,7 +49,6 @@
 #define        NETISR_PPP      28              /* for PPP processing */
 #define        NETISR_BRIDGE   29              /* for bridge processing */
 #define        NETISR_PPPOE    30              /* for pppoe processing */
-#define        NETISR_SWITCH   31              /* for switch dataplane */
 
 #ifndef _LOCORE
 #ifdef _KERNEL
@@ -65,7 +64,6 @@ void  ipintr(void);
 void   ip6intr(void);
 void   pppintr(void);
 void   bridgeintr(void);
-void   switchintr(void);
 void   pfsyncintr(void);
 void   pipexintr(void);
 void   pppoeintr(void);