fix: removed unnecessary usage of error type ErrInvalidMsg

x/wasm/types/errors.go

@@ -85,8 +85,6 @@ var (
 	ErrNoSuchCodeFn = WasmVMFlavouredErrorFactory(errorsmod.Register(DefaultCodespace, 28, "no such code"),
 		func(id uint64) error { return wasmvmtypes.NoSuchCode{CodeID: id} },
 	)
-	// ErrSameAdmin error to show the old admin and new admin are same.
-	ErrSameAdmin = errorsmod.Register(DefaultCodespace, 29, "new admin is the same as the old")
 )
 
 // WasmVMErrorable mapped error type in wasmvm and are not redacted

x/wasm/types/tx.go

@@ -262,7 +262,7 @@ func (msg MsgUpdateAdmin) ValidateBasic() error {
 		return errorsmod.Wrap(err, "new admin")
 	}
 	if strings.EqualFold(msg.Sender, msg.NewAdmin) {
-		return errorsmod.Wrap(ErrSameAdmin, "new admin is the same as the old")
+		return errorsmod.Wrap(ErrInvalid, "new admin is the same as the old")
 	}
 	return nil
 }