Remove "File System Read Only" test

Due to openbmc/openbmc#2250 changes, this test is no longer
valid.

Resolves  openbmc/openbmc-test-automation#1001

Change-Id: Ibce3327122af142d3c69bc60031b94e0c11bff0f
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/test_general_bmc_system.robot b/tests/test_general_bmc_system.robot
index 890bc89..7e3a168 100755
--- a/tests/test_general_bmc_system.robot
+++ b/tests/test_general_bmc_system.robot
@@ -18,14 +18,6 @@
 
 *** Test Cases ***
 
-File System Read Only
-    [Documentation]  Verify that file system is read-only.
-    [Tags]  File_System_Read_Only
-    ${output}  ${stderr}  ${rc}=
-    ...  BMC Execute Command  touch cold-play.txt  ignore_err=${1}
-    Should Contain  ${stderr}  Read-only file system
-
-
 Verify Boot Count After BMC Reboot
     [Documentation]  Verify boot count increments on BMC reboot.
     [Tags]  Verify_Boot_Count_After_BMC_Reboot