delete_entry

# File activesupport/lib/active_support/cache/memory_store.rb, line 162
        def delete_entry(key, options) # :nodoc:
          synchronize do
            @key_access.delete(key)
            entry = @data.delete(key)
            @cache_size -= cached_size(key, entry) if entry
            !!entry
          end
        end