patch 9.0.1594: some internal error messages are translated

Problem:    Some internal error messages are translated.
Solution:   Consistently do not translate internal error messages.
            (closes #12459)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 7cca73f..959331a 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -3887,7 +3887,7 @@
 
 	    if (command_count != (int)CMD_SIZE)
 	    {
-		iemsg(_(e_command_table_needs_to_be_updated_run_make_cmdidxs));
+		iemsg(e_command_table_needs_to_be_updated_run_make_cmdidxs);
 		getout(1);
 	    }