Remove push-to-talk/push-to-mute functionality

Fixes #77

To keep this repository focused on things that I personally find useful
and enjoyable to maintain [1], this commit removes the push-to-talk and
push-to-mute functionality, since I don't actually use it. I'm not sure
why it never clicked with my workflow, because I certainly think it's
cool.

This also has the benefit of fixing #77. It seems like something changed
recently in Hammerspoon that causes the status message from
hammerspoon/microphone.lua to persist on startup. Since this commit
removes hammerspoon/microphone.lua, it also resolves this bug.

[1] https://github.com/jasonrudolph/keyboard/tree/ddffacf#more-useful-for-me

Author: jasonrudolph

README.md

@@ -183,12 +183,6 @@ This setup is honed and tested with the following dependencies.
 
 3. You'll be [prompted to allow Karabiner-Elements to load its kernel extension](https://karabiner-elements.pqrs.org/docs/getting-started/installation/#open-karabiner-elements-preferences), followed by a [flurry of prompts related to input monitoring](https://karabiner-elements.pqrs.org/docs/getting-started/installation/#grant-input-monitoring-to-karabiner-elements-processes). Follow the prompts to upgrade your life.
 
-## TODO
-
-- Add [#13](https://github.com/jasonrudolph/keyboard/pull/13) to [features](#features):
-    - Hold option for push-to-talk/push-to-mute
-    - Double-tap option to mute/unmute microphone
-
 [customize]: http://dictionary.reference.com/browse/customize
 [don't-make-me-think]: http://en.wikipedia.org/wiki/Don't_Make_Me_Think
 [karabiner]: https://github.com/tekezo/Karabiner-Elements

hammerspoon/init.lua

@@ -35,7 +35,6 @@ require('keyboard.control-escape')
 require('keyboard.delete-words')
 require('keyboard.hyper')
 require('keyboard.markdown')
-require('keyboard.microphone')
 require('keyboard.panes')
 require('keyboard.windows')