Python: Fix unwanted module type tracking

Author: tausbn

python/ql/src/experimental/dataflow/internal/DataFlowUtil.qll

@@ -70,7 +70,7 @@ Node importModule(string name) {
   // Because named imports are modelled as `AttrRead`s, the statement `from foo import bar as baz`
   // is interpreted as if it was an assignment `baz = foo.bar`, which means `baz` gets tracked as a
   // reference to `foo.bar`, as desired.
-  result.asCfgNode().getNode() = any(ImportExpr i | i.getAnImportedModuleName() = name)
+  result.asCfgNode().getNode() = any(ImportExpr i | i.getName() = name)
 }
 
 /**

python/ql/test/experimental/dataflow/typetracking/moduleattr.expected

@@ -1,12 +1,5 @@
 module_tracker
 | import_as_attr.py:1:6:1:11 | ControlFlowNode for ImportExpr |
-| import_as_attr_dotted.py:0:0:0:0 | ModuleVariableNode for Global Variable attr_ref in Module import_as_attr_dotted |
-| import_as_attr_dotted.py:1:8:1:18 | ControlFlowNode for ImportExpr |
-| import_as_attr_dotted.py:1:23:1:30 | GSSA Variable attr_ref |
-| import_as_attr_dotted.py:3:1:3:1 | GSSA Variable x |
-| import_as_attr_dotted.py:3:5:3:12 | ControlFlowNode for attr_ref |
-| import_as_attr_dotted.py:6:5:6:5 | SSA variable y |
-| import_as_attr_dotted.py:6:9:6:16 | ControlFlowNode for attr_ref |
 module_attr_tracker
 | import_as_attr.py:0:0:0:0 | ModuleVariableNode for Global Variable attr_ref in Module import_as_attr |
 | import_as_attr.py:1:20:1:35 | ControlFlowNode for ImportMember |