Remove redundant env replacement

lib/kamal/cli/base.rb

@@ -42,11 +42,6 @@ module Kamal::Cli
     end
 
     private
-      def reload_env
-        reset_env
-        load_env
-      end
-
       def load_env
         if destination = options[:destination]
           if File.exist?(".kamal/.env.#{destination}") || File.exist?(".kamal/.env")
@@ -69,29 +64,6 @@ module Kamal::Cli
         end
       end
 
-      def reset_env
-        replace_env @original_env
-      end
-
-      def replace_env(env)
-        ENV.clear
-        ENV.update(env)
-      end
-
-      def with_original_env
-        keeping_current_env do
-          reset_env
-          yield
-        end
-      end
-
-      def keeping_current_env
-        current_env = ENV.to_h.dup
-        yield
-      ensure
-        replace_env(current_env)
-      end
-
       def options_with_subcommand_class_options
         options.merge(@_initializer.last[:class_options] || {})
       end