Drop support for OLD_RAKE

.travis.yml

@@ -1,4 +1,5 @@
 language: ruby
+sudo: false
 
 rvm:
   - 2.0.0
@@ -10,22 +11,5 @@ gemfile:
   - Gemfile_ar31
   - Gemfile_ar32
   - Gemfile_ar40threadsafe
-  - Gemfile_ar42threadsafe
-
-sudo: false
-
-before_script: echo $OLD_RAKE
-
-matrix:
-  include:
-    - rvm: 2.2.1
-      gemfile: Gemfile_ar50
-    - rvm: 1.9.2
-      gemfile: Gemfile_ar30
-      env: OLD_RAKE=1
-    - rvm: 1.9.2
-      gemfile: Gemfile_ar31
-      env: OLD_RAKE=1
-    - rvm: 1.9.2
-      gemfile: Gemfile_ar32
-      env: OLD_RAKE=1
+  - Gemfile_ar41
+  - Gemfile_ar50

Gemfile_ar30

@@ -3,7 +3,3 @@ source "https://rubygems.org"
 gemspec
 
 gem "activeresource", "~> 3.0.0"
-
-if ENV['OLD_RAKE'] == '1'
-  gem "rake", "~> 0.9.2"
-end

Gemfile_ar31

@@ -3,8 +3,3 @@ source "https://rubygems.org"
 gemspec
 
 gem "activeresource", "~> 3.1.0"
-
-if ENV['OLD_RAKE'] == '1'
-  gem "rake", "~> 0.9.2"
-  gem "i18n", "~> 0.6.11"
-end

Gemfile_ar32

@@ -3,8 +3,3 @@ source "https://rubygems.org"
 gemspec
 
 gem "activeresource", "~> 3.2.0"
-
-if ENV['OLD_RAKE'] == '1'
-  gem "rake", "~> 0.9.2"
-  gem "i18n", "~> 0.6.11"
-end