C++: Remove irrelevant test.

cpp/ql/test/library-tests/dataflow/recursion/chained_use.expected

@@ -1 +0,0 @@
-| 1 |

cpp/ql/test/library-tests/dataflow/recursion/chained_use.ql

@@ -1,68 +0,0 @@
-import cpp
-import semmle.code.cpp.ir.dataflow.DataFlow
-import semmle.code.cpp.ir.dataflow.DataFlow2
-import semmle.code.cpp.ir.dataflow.DataFlow3
-import semmle.code.cpp.ir.dataflow.DataFlow4
-import semmle.code.cpp.ir.dataflow.TaintTracking
-import semmle.code.cpp.ir.dataflow.TaintTracking2
-
-class TestConf1 extends DataFlow::Configuration {
-  TestConf1() { this = "TestConf1" }
-
-  override predicate isSource(DataFlow::Node source) { any() }
-
-  override predicate isSink(DataFlow::Node sink) { any() }
-}
-
-class TestConf2 extends DataFlow2::Configuration {
-  TestConf2() { this = "TestConf2" }
-
-  override predicate isSource(DataFlow::Node source) {
-    exists(TestConf1 conf1 | conf1.hasFlowTo(source))
-  }
-
-  override predicate isSink(DataFlow::Node sink) { exists(TestConf1 conf1 | conf1.hasFlowTo(sink)) }
-
-  override predicate isAdditionalFlowStep(DataFlow::Node n1, DataFlow::Node n2) {
-    exists(TestConf1 conf1 |
-      conf1.hasFlowTo(n1) and
-      conf1.hasFlowTo(n2)
-    )
-  }
-}
-
-class TestConf3 extends DataFlow3::Configuration {
-  TestConf3() { this = "TestConf3" }
-
-  override predicate isSource(DataFlow::Node source) {
-    exists(TestConf2 conf2 | conf2.hasFlowTo(source))
-  }
-
-  override predicate isSink(DataFlow::Node sink) { exists(TestConf2 conf2 | conf2.hasFlowTo(sink)) }
-
-  override predicate isAdditionalFlowStep(DataFlow::Node n1, DataFlow::Node n2) {
-    exists(TestConf2 conf2 |
-      conf2.hasFlowTo(n1) and
-      conf2.hasFlowTo(n2)
-    )
-  }
-}
-
-class TestConf4 extends DataFlow4::Configuration {
-  TestConf4() { this = "TestConf4" }
-
-  override predicate isSource(DataFlow::Node source) {
-    exists(TestConf3 conf3 | conf3.hasFlowTo(source))
-  }
-
-  override predicate isSink(DataFlow::Node sink) { exists(TestConf3 conf3 | conf3.hasFlowTo(sink)) }
-
-  override predicate isAdditionalFlowStep(DataFlow::Node n1, DataFlow::Node n2) {
-    exists(TestConf3 conf3 |
-      conf3.hasFlowTo(n1) and
-      conf3.hasFlowTo(n2)
-    )
-  }
-}
-
-select 1

cpp/ql/test/library-tests/dataflow/recursion/recursion.c

@@ -1,2 +0,0 @@
-void f() {
-}