remove temp plugins github paths

Gemfile

@@ -9,27 +9,17 @@ gem "file-dependencies", "0.1.6"
 gem "ci_reporter_rspec", "1.0.0", :group => :development
 gem "simplecov", :group => :development
 gem "coveralls", :group => :development
+# Tins 1.7 requires the ruby 2.0 platform to install,
+# this gem is a dependency of term-ansi-color which is a dependency of coveralls.
+# 1.6 is the last supported version on jruby.
 gem "tins", "1.6", :group => :development
 gem "rspec", "~> 3.1.0", :group => :development
-gem "logstash-devutils", :github => "elastic/logstash-devutils", :branch => "feature/plugin-api-2_0"
+gem "logstash-devutils", :group => :development
 gem "benchmark-ips", :group => :development
 gem "octokit", "3.8.0", :group => :build
-gem "stud", "~> 0.0.22"
+gem "stud", "~> 0.0.22", :group => :build
 gem "fpm", "~> 1.3.3", :group => :build
 gem "rubyzip", "~> 1.1.7", :group => :build
 gem "gems", "~> 0.8.3", :group => :build
 gem "rack-test", :require => "rack/test", :group => :development
-gem "flores", "~> 0.0.6"
-gem "logstash-filter-clone", :github => "logstash-plugins/logstash-filter-clone", :branch => "feature/plugin-api-2_0"
-gem "logstash-filter-mutate", :github => "logstash-plugins/logstash-filter-mutate", :branch => "feature/plugin-api-2_0"
-gem "logstash-filter-multiline", :github => "logstash-plugins/logstash-filter-multiline", :branch => "feature/plugin-api-2_0"
-gem "logstash-filter-grok", :github => "logstash-plugins/logstash-filter-grok", :branch => "feature/plugin-api-2_0"
-gem "logstash-input-generator", :github => "logstash-plugins/logstash-input-generator", :branch => "feature/plugin-api-2_0"
-gem "logstash-input-stdin", :github => "logstash-plugins/logstash-input-stdin", :branch => "feature/plugin-api-2_0"
-gem "logstash-input-tcp", :github => "logstash-plugins/logstash-input-tcp", :branch => "feature/plugin-api-2_0"
-gem "logstash-output-stdout", :github => "logstash-plugins/logstash-output-stdout", :branch => "feature/plugin-api-2_0"
-gem "logstash-codec-plain", :github => "logstash-plugins/logstash-codec-plain", :branch => "feature/plugin-api-2_0"
-gem "logstash-codec-line", :github => "logstash-plugins/logstash-codec-line", :branch => "feature/plugin-api-2_0"
-gem "logstash-codec-json", :github => "logstash-plugins/logstash-codec-json", :branch => "feature/plugin-api-2_0"
-gem "logstash-codec-json_lines", :github => "logstash-plugins/logstash-codec-json_lines", :branch => "feature/plugin-api-2_0"
-gem "logstash-patterns-core", :github => "logstash-plugins/logstash-patterns-core", :branch => "feature/plugin-api-2_0"
+gem "flores", "~> 0.0.6", :group => :development