Python: Move framework tests out of experimental

Since they are not experimental anymore 😄

python/ql/test/library-tests/frameworks/stdlib/CodeExecutionPossibleFP2.py

@@ -0,0 +1,13 @@
+# without this, `eval("print(42)")` becomes invalid syntax in Python 2, since print is a
+# statement
+from __future__ import print_function
+
+
+def foo(*args, **kwargs):
+    raise Exception("no eval")
+
+
+eval = foo
+
+# This function call might be marked as a code execution, but it actually isn't.
+eval("print(42)")