Merge pull request #21597 from github/tausbn/python-port-unreachable-code

Python: Port UnreachableCode.ql

python/ql/src/Statements/UnreachableCode.ql

@@ -13,7 +13,7 @@
  */
 
 import python
-private import LegacyPointsTo
+private import semmle.python.ApiGraphs
 
 predicate typing_import(ImportingStmt is) {
   exists(Module m |
@@ -34,11 +34,7 @@ predicate unique_yield(Stmt s) {
 /** Holds if `contextlib.suppress` may be used in the same scope as `s` */
 predicate suppression_in_scope(Stmt s) {
   exists(With w |
-    w.getContextExpr()
-        .(Call)
-        .getFunc()
-        .(ExprWithPointsTo)
-        .pointsTo(Value::named("contextlib.suppress")) and
+    w.getContextExpr() = API::moduleImport("contextlib").getMember("suppress").getACall().asExpr() and
     w.getScope() = s.getScope()
   )
 }