Remove ability to perform edit-actions on bitcoin receivers

[tomer-stripe]

Tests pass:

» bundle exec rake test
[Coveralls] Set up the SimpleCov formatter.
[Coveralls] Using SimpleCov's 'test_frameworks' settings.
/Users/tomer/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/shoulda-context-1.2.2/lib/shoulda/context/context.rb:400: warning: assigned but unused variable - context
Loaded suite /Users/tomer/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/rake-12.3.1/lib/rake/rake_test_loader
Started
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Finished in 2.654357 seconds.
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477 tests, 571 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
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179.70 tests/s, 215.12 assertions/s

Looks like these didn't have much coverage :(

[brandur-stripe]

LGTM.

@tomer-stripe Do you want to try to cut the release? There's instructions in our docs and you can use my changelog message from stripe-python for inspiration.

[tomer-stripe]

Yep! I can give that a shot