fix all ql/unused-field warnings

java/ql/lib/semmle/code/java/security/IntentUriPermissionManipulation.qll

@@ -96,8 +96,6 @@ private class IntentFlagsOrDataChangedSanitizer extends IntentUriPermissionManip
  * ```
  */
 private class IntentFlagsOrDataCheckedGuard extends IntentUriPermissionManipulationGuard {
-  Expr condition;
-
   IntentFlagsOrDataCheckedGuard() { intentFlagsOrDataChecked(this, _, _) }
 
   override predicate checks(Expr e, boolean branch) { intentFlagsOrDataChecked(this, e, branch) }

java/ql/src/experimental/semmle/code/java/PathSanitizer.qll

@@ -136,8 +136,6 @@ private predicate isDisallowedWord(CompileTimeConstantExpr word) {
 
 /** A complementary guard that protects against path traversal, by looking for the literal `..`. */
 class PathTraversalGuard extends Guard instanceof MethodAccess {
-  Expr checked;
-
   PathTraversalGuard() {
     super.getMethod().getDeclaringType() instanceof TypeString and
     super.getMethod().hasName(["contains", "indexOf"]) and