Java/C#: Delete old model generator scripts and rename the new ones.

java/ql/src/utils/model-generator/GenerateFlowModelExtensions.py

@@ -1,15 +0,0 @@
-#!/usr/bin/python3
-
-import sys
-import os.path
-import subprocess
-
-# Add Model as Data script directory to sys.path.
-gitroot = subprocess.check_output(["git", "rev-parse", "--show-toplevel"]).decode("utf-8").strip()
-madpath = os.path.join(gitroot, "misc/scripts/models-as-data/")
-sys.path.append(madpath)
-
-import generate_flow_model_extensions as model
-
-language = "java"
-model.Generator.make(language).run()