Remove unused SocketCAN constants (#575)

These constants are no longer used in the code and can be cleaned up

Fixes #574

Author: karlding

can/interfaces/socketcan/constants.py

@@ -4,8 +4,6 @@
 Defines shared CAN constants.
 """
 
-canMSG_EXT          = 0x0004
-
 CAN_ERR_FLAG        = 0x20000000
 CAN_RTR_FLAG        = 0x40000000
 CAN_EFF_FLAG        = 0x80000000
@@ -14,10 +12,6 @@
 CAN_BCM_TX_SETUP    = 1
 CAN_BCM_TX_DELETE   = 2
 
-CAN_BCM_TX_EXPIRED  = 9
-
-CAN_BCM_RX_TIMEOUT  = 11
-
 # BCM flags
 SETTIMER            = 0x0001
 STARTTIMER          = 0x0002
@@ -57,32 +51,11 @@
 SIOCGSTAMP =    0x8906
 EXTFLG =        0x0004
 
-SKT_ERRFLG  =   0x0001
-SKT_RTRFLG  =   0x0002
-
 CANFD_BRS   =   0x01
 CANFD_ESI   =   0x02
 
 CANFD_MTU = 72
 
-PYCAN_ERRFLG =  0x0020
-PYCAN_STDFLG =  0x0002
-PYCAN_RTRFLG =  0x0001
-
-ID_TYPE_EXTENDED = True
-ID_TYPE_STANDARD = False
-
-ID_TYPE_29_BIT = ID_TYPE_EXTENDED
-ID_TYPE_11_BIT = ID_TYPE_STANDARD
-
-REMOTE_FRAME = True
-DATA_FRAME = False
-WAKEUP_MSG = True
-ERROR_FRAME = True
-
-DRIVER_MODE_SILENT = False
-DRIVER_MODE_NORMAL = (not DRIVER_MODE_SILENT)
-
 STD_ACCEPTANCE_MASK_ALL_BITS = (2**11 - 1)
 MAX_11_BIT_ID = STD_ACCEPTANCE_MASK_ALL_BITS