install.rb in mixlib-install-2.0.0

- old
+ new

@@ -15,12 +15,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
 
-raise "mixlib-install v1 has been deprecated, please update to v2+. See https://discourse.chef.io/t/end-of-life-announcement-for-chef-software-inc-s-bintray-account/9807/1 for more information."
-
 require "mixlib/versioning"
 require "mixlib/shellout"
 
 require "mixlib/install/backend"
 require "mixlib/install/options"
@@ -182,16 +180,8 @@
     # base_url [String]
     #   url pointing to the omnitruck to be queried by the script.
     #
     def self.install_ps1(context = {})
       Mixlib::Install::Generator::PowerShell.install_ps1(context)
-    end
-
-    #
-    # Returns if unified_backend feature flag for mixlib-install is enabled
-    #
-    # @return [Boolean] true if feature is enabled, false otherwise.
-    def self.unified_backend?
-      !ENV["MIXLIB_INSTALL_UNIFIED_BACKEND"].nil?
     end
   end
 end