qerror.h: Remove QERR defines that are only used once

Just hardcode them in the callers

Cc: Luiz Capitulino <[email protected]>
Cc: Markus Armbruster <[email protected]>
Signed-off-by: Cole Robinson <[email protected]>
Reviewed-by: Paolo Bonzini <[email protected]>
Signed-off-by: Luiz Capitulino <[email protected]>
diff --git a/qmp.c b/qmp.c
index 87a28f7..5e2a66c 100644
--- a/qmp.c
+++ b/qmp.c
@@ -166,7 +166,7 @@
     Error *local_err = NULL;
 
     if (runstate_needs_reset()) {
-        error_set(errp, QERR_RESET_REQUIRED);
+        error_setg(errp, "Resetting the Virtual Machine is required");
         return;
     } else if (runstate_check(RUN_STATE_SUSPENDED)) {
         return;