Delete unused classes

Author: smowton

java/ql/src/semmle/code/java/frameworks/javaee/jsf/JSFRenderer.qll

@@ -12,54 +12,6 @@ class FacesContext extends RefType {
   }
 }
 
-/**
- * The JSF class `ExternalContext` allowing JavaServer Faces based applications to run in
- * either a Servlet or a Portlet environment.
- */
-class ExternalContext extends RefType {
-  ExternalContext() {
-    this.hasQualifiedName(["javax.faces.context", "jakarta.faces.context"], "ExternalContext")
-  }
-}
-
-/**
- * The base class type `UIComponent` for all user interface components in JavaServer Faces.
- */
-class FacesUIComponent extends RefType {
-  FacesUIComponent() {
-    this.hasQualifiedName(["javax.faces.component", "jakarta.faces.component"], "UIComponent")
-  }
-}
-
-/**
- * The JSF class `Renderer` that converts internal representation of `UIComponent` into the output
- * stream (or writer) associated with the response we are creating for a particular request.
- */
-class FacesRenderer extends RefType {
-  FacesRenderer() {
-    this.hasQualifiedName(["javax.faces.render", "jakarta.faces.render"], "Renderer")
-  }
-}
-
-/**
- * The JSF class `ResponseWriter` that outputs and producing elements and attributes for markup
- * languages like HTML and XML.
- */
-class FacesResponseWriter extends RefType {
-  FacesResponseWriter() {
-    this.hasQualifiedName(["javax.faces.context", "jakarta.faces.context"], "ResponseWriter")
-  }
-}
-
-/**
- * The class `ResponseStream` that produces binary output.
- */
-class FacesResponseStream extends RefType {
-  FacesResponseStream() {
-    this.hasQualifiedName(["javax.faces.context", "jakarta.faces.context"], "ResponseStream")
-  }
-}
-
 private class ExternalContextSource extends SourceModelCsv {
   override predicate row(string row) {
     row =