Stack rescue blocks for Gitlab::Ci::Config#initialize

lib/gitlab/ci/config.rb

@@ -7,7 +7,6 @@ module Gitlab
       ConfigError = Class.new(StandardError)
 
       def initialize(config, opts = {})
-        begin
         @config = Config::Extendable
           .new(build_config(config, opts))
           .to_hash
@@ -16,7 +15,6 @@ module Gitlab
         @global.compose!
       rescue Loader::FormatError, Extendable::ExtensionError => e
         raise Config::ConfigError, e.message
-        end
       rescue ::Gitlab::Ci::External::Processor::FileError => e
         raise ::Gitlab::Ci::YamlProcessor::ValidationError, e.message
       end