Revert "Add a method for processing JSON schemas as references"

This reverts commit 2a4a780.

Author: MaggieKimani1

src/Microsoft.OpenApi/Services/OpenApiWalker.cs

@@ -807,7 +807,8 @@ internal void Walk(OpenApiEncoding encoding)
         /// </summary>
         internal JsonSchema Walk(JsonSchema schema, bool isComponent = false)
         {
-            if (schema == null || ProcessSchemaAsReference(schema, isComponent))
+            if (schema == null
+                || (schema.GetRef() != null && !isComponent))
             {
                 return schema;
             }
@@ -1161,17 +1162,6 @@ private bool ProcessAsReference(IOpenApiReferenceable referenceable, bool isComp
             }
             return isReference;
         }
-
-        private bool ProcessSchemaAsReference(JsonSchema schema, bool isComponent = false)
-        {
-            var isReference = schema.GetRef() != null && !isComponent;
-            if (isReference)
-            {
-                _visitor.Visit(ref schema);
-            }
-
-            return isReference;
-        }
     }
 
     /// <summary>