remove duplicate doc and boiler plate code

Author: pjohnst5

cns/restserver/ibdevice.go

@@ -57,24 +57,3 @@ func AssignDevicesToPod(podID string, deviceIDs []string) (types.ResponseCode, s
 	// here is where we would make the MTPNC and write the devices to the spec
 	return types.Success, fmt.Sprintf("Assigned devices %v to pod %s", deviceIDs, podID)
 }
-
-// IsValidMacAddress validates MAC address format
-func IsValidMacAddress(mac string) bool {
-	if len(mac) != 17 {
-		return false
-	}
-
-	for i, c := range mac {
-		if i%3 == 2 {
-			if c != ':' {
-				return false
-			}
-		} else {
-			if !((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')) {
-				return false
-			}
-		}
-	}
-
-	return true
-}