Java: remove more path-injection related classes (will maybe add some of these back in a separate PR)

Author: Jami Cogswell

java/ql/lib/semmle/code/java/Jsf.qll

@@ -1,10 +1,8 @@
 import java
-private import semmle.code.java.Jsf
 private import semmle.code.java.dataflow.ExternalFlow
 private import semmle.code.java.dataflow.FlowSources
 private import semmle.code.java.dataflow.StringPrefixes
 private import semmle.code.java.frameworks.javaee.ejb.EJBRestrictions
-private import semmle.code.java.SpringResource
 
 /** A sink for unsafe URL forward vulnerabilities. */
 abstract class UnsafeUrlForwardSink extends DataFlow::Node { }

java/ql/lib/semmle/code/java/SpringResource.qll

@@ -4,7 +4,6 @@ import java
 import semmle.code.java.security.UnsafeUrlForward
 import semmle.code.java.dataflow.FlowSources
 import semmle.code.java.dataflow.TaintTracking
-import semmle.code.java.Jsf
 import semmle.code.java.security.PathSanitizer
 
 /**