Todo code removal for bundler 2.0

lib/bundler/cli/install.rb

@@ -201,18 +201,6 @@ def normalize_settings
       options[:force] = options[:redownload]
     end
 
-    def warn_ambiguous_gems
-      # TODO: remove this when we drop Bundler 1.x support
-      Installer.ambiguous_gems.to_a.each do |name, installed_from_uri, *also_found_in_uris|
-        Bundler.ui.warn "Warning: the gem '#{name}' was found in multiple sources."
-        Bundler.ui.warn "Installed from: #{installed_from_uri}"
-        Bundler.ui.warn "Also found in:"
-        also_found_in_uris.each {|uri| Bundler.ui.warn "  * #{uri}" }
-        Bundler.ui.warn "You should add a source requirement to restrict this gem to your preferred source."
-        Bundler.ui.warn "For example:"
-        Bundler.ui.warn "    gem '#{name}', :source => '#{installed_from_uri}'"
-        Bundler.ui.warn "Then uninstall the gem '#{name}' (or delete all bundled gems) and then install again."
-      end
-    end
+    def warn_ambiguous_gems; end
   end
 end

lib/bundler/definition.rb

@@ -759,8 +759,6 @@ def converge_locked_specs
         end
       end
 
-      unlock_source_unlocks_spec = Bundler.feature_flag.unlock_source_unlocks_spec?
-
       converged = []
       @locked_specs.each do |s|
         # Replace the locked dependency's source with the equivalent source from the Gemfile
@@ -772,11 +770,6 @@ def converge_locked_specs
         next if s.source.nil?
         next if @unlock[:sources].include?(s.source.name)
 
-        # XXX This is a backwards-compatibility fix to preserve the ability to
-        # unlock a single gem by passing its name via `--source`. See issue #3759
-        # TODO: delete in Bundler 2
-        next if unlock_source_unlocks_spec && @unlock[:sources].include?(s.name)
-
         # If the spec is from a path source and it doesn't exist anymore
         # then we unlock it.
 

lib/bundler/installer/parallel_installer.rb

@@ -91,10 +91,6 @@ def initialize(installer, all_specs, size, standalone, force)
     end
 
     def call
-      # Since `autoload` has the potential for threading issues on 1.8.7
-      # TODO:  remove in bundler 2.0
-      require "bundler/gem_remote_fetcher" if RUBY_VERSION < "1.9"
-
       check_for_corrupt_lockfile
 
       if @size > 1

spec/bundler/bundler_spec.rb

@@ -386,10 +386,6 @@ def clear_cached_requires_sudo
       if Bundler.respond_to?(:remove_instance_variable)
         Bundler.remove_instance_variable(:@requires_sudo_ran)
         Bundler.remove_instance_variable(:@requires_sudo)
-      else
-        # TODO: Remove these code when Bundler drops Ruby 1.8.7 support
-        Bundler.send(:remove_instance_variable, :@requires_sudo_ran)
-        Bundler.send(:remove_instance_variable, :@requires_sudo)
       end
     end
     context "writable paths" do