clang-error: fix clang-diagnostic-defaulted-function-deleted error

The clang-diagnostic-defaulted-function-deleted error is generated when
explicitly defaulted move assignment operator is implicitly deleted.
This commit fixes those errors.

Change-Id: I7a407dd3411b19a73a13b1c1e4805b89fc2ec51a
Signed-off-by: Pavithra Barithaya <pavithra.b@ibm.com>
diff --git a/pldmtool/oem/ibm/pldm_oem_ibm.cpp b/pldmtool/oem/ibm/pldm_oem_ibm.cpp
index cdaa2d5..100857e 100644
--- a/pldmtool/oem/ibm/pldm_oem_ibm.cpp
+++ b/pldmtool/oem/ibm/pldm_oem_ibm.cpp
@@ -37,7 +37,7 @@
     GetAlertStatus(const GetAlertStatus&) = delete;
     GetAlertStatus(GetAlertStatus&&) = default;
     GetAlertStatus& operator=(const GetAlertStatus&) = delete;
-    GetAlertStatus& operator=(GetAlertStatus&&) = default;
+    GetAlertStatus& operator=(GetAlertStatus&&) = delete;
 
     explicit GetAlertStatus(const char* type, const char* name, CLI::App* app) :
         CommandInterface(type, name, app)
@@ -99,7 +99,7 @@
     GetFileTable(const GetFileTable&) = delete;
     GetFileTable(GetFileTable&&) = default;
     GetFileTable& operator=(const GetFileTable&) = delete;
-    GetFileTable& operator=(GetFileTable&&) = default;
+    GetFileTable& operator=(GetFileTable&&) = delete;
 
     using CommandInterface::CommandInterface;