Remove move-only adapter support

Summary:
`cpp.Adapter.moveOnly` no longer affects C++ code generation, and every production use was attached to a copyable adapted type. Remove the annotation field, stale annotations, move-only fixtures, and regenerate affected fixture outputs.

Field ID 5 remains unreserved so existing serialized annotation payloads continue to decode without unknown-field enforcement. Keep the existing arithmetic `serializedSizeFixed` adapter-size support unchanged.

The Configerator-owned Metarmor source change is D116658723 and must land first.

Reviewed By: hchokshi

Differential Revision: D116659189

fbshipit-source-id: 93fe5691c8c85f9ab30f1e68d840cac3d15e6433

Author: iahs

exactprint/tests/fbthrift-tests/adapter/src/module.thrift

@@ -547,21 +547,6 @@ struct SameNamespaceStruct {
   1: i64 data;
 }
 
-@cpp.Adapter{name = "::apache::thrift::test::MoveOnlyAdapter", moveOnly = true}
-struct HeapAllocated {}
-
-struct MoveOnly {
-  1: HeapAllocated ptr;
-}
-
-struct AlsoMoveOnly {
-  @cpp.Adapter{
-    name = "::apache::thrift::test::MoveOnlyAdapter",
-    moveOnly = true,
-  }
-  1: i64 ptr;
-}
-
 @cpp.Adapter{name = "::apache::thrift::test::TemplatedTestAdapter"}
 @scope.Transitive
 struct ApplyAdapter {}
@@ -584,7 +569,6 @@ struct CountingStruct {
 
 service AdapterService {
   CountingStruct count();
-  HeapAllocated adaptedTypes(1: HeapAllocated arg);
 }
 
 @cpp.Adapter{name = "::apache::thrift::test::VariableAdapter"}
@@ -617,8 +601,6 @@ const Person2 person_no_transitive = Person2{name = "DefaultName 2"};
 
 const AdaptedBool type_adapted = true;
 
-const MoveOnly nested_adapted = {"ptr": {}};
-
 const list<AdaptedByte> container_of_adapted = [1, 2, 3];
 
 // The following were automatically generated and may benefit from renaming.

thrift/annotation/cpp.thrift

@@ -176,9 +176,6 @@ struct Adapter {
    */
   3: string underlyingName;
   4: string extraNamespace;
-
-  /** Must set to true when adapted type is not copyable. */
-  5: bool moveOnly;
 }
 
 /**