Move Hbc::DSL#license to compat.

Library/Homebrew/cask/lib/hbc/dsl.rb

@@ -203,10 +203,6 @@ module Hbc
       @sha256 ||= arg
     end
 
-    def license(*)
-      odeprecated "Hbc::DSL#license"
-    end
-
     # depends_on uses a load method so that multiple stanzas can be merged
     def depends_on(*args)
       @depends_on ||= DSL::DependsOn.new

Library/Homebrew/compat/hbc.rb

@@ -3,6 +3,7 @@ require "compat/hbc/cli/update"
 require "compat/hbc/cache"
 require "compat/hbc/caskroom"
 require "compat/hbc/cli"
+require "compat/hbc/dsl"
 
 module Hbc
   class << self

Library/Homebrew/compat/hbc/dsl.rb

@@ -0,0 +1,7 @@
+module Hbc
+  class DSL
+    def license(*)
+      odeprecated "Hbc::DSL#license"
+    end
+  end
+end