Remove GMAC net driver, with the ok of the PPC folks.

'sungem' which DaveM is maintaining is the replacement.

drivers/net/Config.in

@@ -37,7 +37,6 @@ if [ "$CONFIG_NET_ETHERNET" = "y" ]; then
         bool '    Use AAUI port instead of TP by default' CONFIG_MACE_AAUI_PORT
       fi
       dep_tristate '  BMAC (G3 ethernet) support' CONFIG_BMAC $CONFIG_ALL_PPC
-      dep_tristate '  GMAC (G4/iBook ethernet) support' CONFIG_GMAC $CONFIG_ALL_PPC
       tristate '  National DP83902AV (Oak ethernet) support' CONFIG_OAKNET
    fi
    if [ "$CONFIG_ZORRO" = "y" ]; then

drivers/net/Makefile

@@ -57,7 +57,6 @@ obj-$(CONFIG_SUNGEM) += sungem.o
 
 obj-$(CONFIG_MACE) += mace.o
 obj-$(CONFIG_BMAC) += bmac.o
-obj-$(CONFIG_GMAC) += gmac.o
 
 obj-$(CONFIG_OAKNET) += oaknet.o 8390.o