Remove reference to PathCreation

ZipSlip no longer needs to make this exclusion, since PathCreation arguments are no longer path-injection sinks

Author: atorralba

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

@@ -41,28 +41,5 @@ module ZipSlipFlow = TaintTracking::Global<ZipSlipConfig>;
  * A sink that represents a file creation, such as a file write, copy or move operation.
  */
 private class FileCreationSink extends DataFlow::Node {
-  FileCreationSink() {
-    sinkNode(this, "path-injection") and
-    not isPathCreation(this)
-  }
-}
-
-/**
- * Holds if `sink` is a path creation node that doesn't imply a read/write filesystem operation.
- * This is to avoid creating new spurious alerts, since `PathCreation` sinks weren't
- * previously part of this query.
- */
-private predicate isPathCreation(DataFlow::Node sink) {
-  exists(PathCreation pc |
-    pc.getAnInput() = sink.asExpr()
-    or
-    pc.getAnInput().(Argument).isVararg() and sink.(DataFlow::ImplicitVarargsArray).getCall() = pc
-  |
-    // exclude actual read/write operations included in `PathCreation`
-    not pc.(Call)
-        .getCallee()
-        .getDeclaringType()
-        .hasQualifiedName("java.io",
-          ["FileInputStream", "FileOutputStream", "FileReader", "FileWriter"])
-  )
+  FileCreationSink() { sinkNode(this, "path-injection") }
 }