stacks: remove deferred actions for UpgradeResourceState

UpgradeResourceState is offline; it does not need a configured provider

therefore it can not be deferred

docs/plugin-protocol/tfplugin5.6.proto

@@ -344,10 +344,6 @@ message UpgradeResourceState {
         // appropriate older schema. The raw_state will be the json encoded
         // state, or a legacy flat-mapped format.
         RawState raw_state = 3;
-
-        // deferral_allowed signals that the provider is allowed to defer the
-        // changes. If set the caller needs to handle the deferred response.
-        bool deferral_allowed = 4;
     }
     message Response {
         // new_state is a msgpack-encoded data structure that, when interpreted with
@@ -359,10 +355,6 @@ message UpgradeResourceState {
         // be safely resolved, and warnings about any possibly-risky assumptions made
         // in the upgrade process.
         repeated Diagnostic diagnostics = 2;
-
-        // deferred is set if the provider is deferring the change. If set the caller
-        // needs to handle the deferral.
-        Deferred deferred = 3;
     }
 }
 

docs/plugin-protocol/tfplugin6.6.proto

@@ -362,10 +362,6 @@ message UpgradeResourceState {
         // appropriate older schema. The raw_state will be the json encoded
         // state, or a legacy flat-mapped format.
         RawState raw_state = 3;
-
-        // deferral_allowed signals that the provider is allowed to defer the
-        // changes. If set the caller needs to handle the deferred response.
-        bool deferral_allowed = 4;
     }
     message Response {
         // new_state is a msgpack-encoded data structure that, when interpreted with
@@ -377,10 +373,6 @@ message UpgradeResourceState {
         // be safely resolved, and warnings about any possibly-risky assumptions made
         // in the upgrade process.
         repeated Diagnostic diagnostics = 2;
-
-        // deferred is set if the provider is deferring the change. If set the caller
-        // needs to handle the deferral.
-        Deferred deferred = 3;
     }
 }