Remove python bin declaration in switcher script am: e1ceb9a9c5

Original change: https://android-review.googlesource.com/c/platform/tools/doc_generation/+/1825736

Change-Id: I0a358eee6049e2ee90c11b8729d0550001166991
diff --git a/switcher4.py b/switcher4.py
index 7e06fac..6cd7739 100644
--- a/switcher4.py
+++ b/switcher4.py
@@ -1,5 +1,3 @@
-#!/usr/bin/python
-#
 # Copyright 2019 - The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");