Remove pycall from development dependencies

Author: mrkn

.github/workflows/windows.yml

@@ -48,7 +48,7 @@ jobs:
 
     - run: gem install bundler
 
-    - run: bundle install --jobs 4 --retry 3
+    - run: bundle install --jobs 4 --retry 3 --without pycall
 
     - name: Run tests
       env:

Gemfile

@@ -12,6 +12,10 @@ group :plot do
   gem 'rubyvis'
 end
 
+group :pycall do
+  gem 'pycall'
+end
+
 group :test do
   gem 'cztop'
 end

iruby.gemspec

@@ -23,7 +23,6 @@ Gem::Specification.new do |s|
   s.add_dependency 'mimemagic', '~> 0.3'
   s.add_dependency 'multi_json', '~> 1.11'
 
-  s.add_development_dependency 'pycall', '>= 1.2.1'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'test-unit'
   s.add_development_dependency 'test-unit-rr'