bios: Remove two unneeded bios attributes as mentioned below

1. pvm_inband_code_update
   - On BMC in-band CU is allowed based on pvm_hmc_managed and
     identified that redundant pvm_inband_code_update attribute
     is no longer needed.

2. pvm_surveillance
   - BMC controls whether surveillance runs via the setEventReceiver
     command, with the disable or enableAsync options. Hence, no
     need of pvm_surveillance attribute.

Signed-off-by: Sridevi Ramesh <sridevra@in.ibm.com>
Change-Id: I053c1974b5fced2a024820efc576f0756bbabe65
diff --git a/oem/ibm/configurations/bios/enum_attrs.json b/oem/ibm/configurations/bios/enum_attrs.json
index ff2f260..d1aecd8 100644
--- a/oem/ibm/configurations/bios/enum_attrs.json
+++ b/oem/ibm/configurations/bios/enum_attrs.json
@@ -13,30 +13,6 @@
          "displayName" : "pvm_fw_boot_side"
       },
       {
-         "attribute_name":"pvm_inband_code_update",
-         "possible_values":[
-            "Allowed",
-            "Not Allowed"
-         ],
-         "default_values":[
-            "Allowed"
-         ],
-         "helpText" : "pvm_inband_code_update",
-         "displayName" : "pvm_inband_code_update"
-      },
-      {
-         "attribute_name":"pvm_surveillance",
-         "possible_values":[
-            "Disabled",
-            "Enabled"
-         ],
-         "default_values":[
-            "Enabled"
-         ],
-         "helpText" : "pvm_surveillance",
-         "displayName" : "pvm_surveillance"
-      },
-      {
          "attribute_name":"pvm_pcie_error_inject",
          "possible_values":[
             "Disabled",