[MM-54183] Remove deprecated Manifest.RequiredConfig field (#24319)

server/public/model/manifest.go

@@ -188,12 +188,6 @@ type Manifest struct {
 
 	// Plugins can store any kind of data in Props to allow other plugins to use it.
 	Props map[string]any `json:"props,omitempty" yaml:"props,omitempty"`
-
-	// RequiredConfig defines any required server configuration fields for the plugin to function properly.
-	//
-	// Deprecated: The required server configuration fields should be checked using custom code.
-	// This field will get removed in the next major release.
-	RequiredConfig *Config `json:"required_configuration,omitempty" yaml:"required_configuration,omitempty"`
 }
 
 type ManifestServer struct {