Merge python and python-2

I'm not sure the distinction between Python and Python 2 is
particularly helpful, and because they share a logo it means we appear
to have python listed twice under technologies. I've replaced
instances of `python-2` with `python` to fix.

_coops/aptivate.md

@@ -31,7 +31,7 @@ technologies:
 - docker
 - javascript
 - php
-- python-2
+- python
 ---
 
 Aptivate is a UK based NGO that provides IT services for international development. We believe in the power of knowledge and communication to alleviate poverty, suffering and conflict, and in the right of every individual to inform and be informed. We are dedicated to developing ICT services that facilitate communication for unconnected communities, empowering ordinary people across the developing world to improve their lives.

_coops/autonomic.md

@@ -46,7 +46,7 @@ technologies:
 - open-street-map
 - php
 - postgresql
-- python-2
+- python
 - rocket-chat
 - sandstorm
 - ubuntu

_coops/creative-coop.md

@@ -48,7 +48,7 @@ technologies:
 - mysql
 - photoshop
 - php
-- python-2
+- python
 - sql-server
 ---
 

_coops/dev-the-developers-society.md

@@ -31,7 +31,6 @@ services:
 - strategy
 - web-design
 technologies:
-- python-2
 - python
 ---
 

_coops/secure-active-c-i-c.md

@@ -31,7 +31,7 @@ technologies:
 - free-bsd
 - lets-encrypt
 - openwrt
-- python-2
+- python
 - ubuntu
 - wordpress
 ---