tokenring: delete all remaining driver support

This represents the mass deletion of the of the tokenring support.

It gets rid of:
  - the net/tr.c which the drivers depended on
  - the drivers/net component
  - the Kbuild infrastructure around it
  - any tokenring related CONFIG_ settings in any defconfigs
  - the tokenring headers in the include/linux dir
  - the firmware associated with the tokenring drivers.
  - any associated token ring documentation.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

Documentation/networking/00-INDEX

@@ -1,7 +1,5 @@
 00-INDEX
 	- this file
-3c359.txt
-	- information on the 3Com TokenLink Velocity XL (3c5359) driver.
 3c505.txt
 	- information on the 3Com EtherLink Plus (3c505) driver.
 3c509.txt
@@ -142,8 +140,6 @@ netif-msg.txt
 	- Design of the network interface message level setting (NETIF_MSG_*).
 nfc.txt
 	- The Linux Near Field Communication (NFS) subsystem.
-olympic.txt
-	- IBM PCI Pit/Pit-Phy/Olympic Token Ring driver info.
 openvswitch.txt
 	- Open vSwitch developer documentation.
 operstates.txt
@@ -184,8 +180,6 @@ skfp.txt
 	- SysKonnect FDDI (SK-5xxx, Compaq Netelligent) driver info.
 smc9.txt
 	- the driver for SMC's 9000 series of Ethernet cards
-smctr.txt
-	- SMC TokenCard TokenRing Linux driver info.
 spider-net.txt
 	- README for the Spidernet Driver (as found in PS3 / Cell BE).
 stmmac.txt
@@ -200,8 +194,6 @@ tcp-thin.txt
 	- kernel tuning options for low rate 'thin' TCP streams.
 tlan.txt
 	- ThunderLAN (Compaq Netelligent 10/100, Olicom OC-2xxx) driver info.
-tms380tr.txt
-	- SysKonnect Token Ring ISA/PCI adapter driver info.
 tproxy.txt
 	- Transparent proxy support user guide.
 tuntap.txt