Gemfile: drop launchy and netrc gems

These were added in 5b27058 (add rest client gem, 2012-04-04), but we
later dropped the rest-client gem in c410469 (Rails 3.2.17,
2014-04-27). It's not clear to me if they were needed as part of that,
or if it was simply an error (they actually got moved out of the dev
section). But they don't seem to be doing anything in the modern
codebase. Let's get rid of them in the name of simplicity.

Author: peff

Gemfile

@@ -15,8 +15,6 @@ gem "puma"
 gem "tilt"
 
 gem "diffy"
-gem "launchy"
-gem "netrc"
 gem "nokogiri"
 gem "redcarpet"
 gem "yajl-ruby"

Gemfile.lock

@@ -122,8 +122,6 @@ GEM
     i18n (1.8.10)
       concurrent-ruby (~> 1.0)
     iso8601 (0.13.0)
-    launchy (2.5.0)
-      addressable (~> 2.7)
     listen (3.5.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -139,7 +137,6 @@ GEM
     minitest (5.14.4)
     multi_json (1.15.0)
     multipart-post (2.1.1)
-    netrc (0.11.0)
     nio4r (2.5.7)
     nokogiri (1.11.5)
       mini_portile2 (~> 2.5.0)
@@ -329,9 +326,7 @@ DEPENDENCIES
   faraday_middleware
   foreman
   iso8601
-  launchy
   listen
-  netrc
   nokogiri
   octokit
   pg