style fixes

Library/Homebrew/cask/upgrade.rb

@@ -42,9 +42,7 @@ module Cask
 
       quarantine = true if quarantine.nil?
 
-      if Homebrew::EnvConfig.upgrade_greedy?
-        greedy = true
-      end
+      greedy = true if Homebrew::EnvConfig.upgrade_greedy?
 
       outdated_casks = if casks.empty?
         Caskroom.casks(config: Config.from_args(args)).select do |cask|

Library/Homebrew/dev-cmd/bump-cask-pr.rb

@@ -84,7 +84,7 @@ module Homebrew
       Cask::DSL::Version.new(new_version)
     end
 
-    new_hash = unless (new_hash = args.sha256).nil?
+    new_hash = unless (new_hash = args.sha265).nil?
       raise UsageError, "`--sha256` must not be empty." if new_hash.blank?
 
       ["no_check", ":no_check"].include?(new_hash) ? :no_check : new_hash

Library/Homebrew/env_config.rb

@@ -239,9 +239,6 @@ module Homebrew
       HOMEBREW_GITHUB_PACKAGES_USER:             {
         description: "Use this username when accessing the GitHub Packages Registry (where bottles may be stored).",
       },
-      HOMEBREW_GREEDY:                           {
-        description: "Pass this value to brew upgrade greedy.",
-      },
       HOMEBREW_INSTALL_BADGE:                    {
         description:  "Print this text before the installation summary of each successful build.",
         default_text: 'The "Beer Mug" emoji.',