Remove uneeded calls to the python interpreter.

Scripts are executed by an embedded interpreter.

scripts/python/catapult.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 #   Catapult v0.2 - less ordinary abuse generator
 #   Copyright (C) 2007  Pavel Shevchuk <stlwrt@gmail.com>
 

scripts/python/theme.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 """
 Theme manager for WeeChat. 
 It loads configuration parameters from file 

scripts/python/tinyurl.py

@@ -1,4 +1,3 @@
-#!/bin/env python
 #
 # TinyUrl, version 3.3, for weechat version 0.1.9
 #