DEV: No need to carry two brotli implementations around

old version of brotli binary is long gone, require brotli 1.0.0 and up

lib/tasks/assets.rake

@@ -116,19 +116,8 @@ def gzip(path)
 end
 
 # different brotli versions use different parameters
-ver_out, _ver_err, ver_status = Open3.capture3('brotli --version')
-if !ver_status.success?
-  # old versions of brotli don't respond to --version
-  def brotli_command(path)
-    "brotli --quality 11 --input #{path} --output #{path}.br"
-  end
-elsif ver_out >= "brotli 1.0.0"
-  def brotli_command(path)
+def brotli_command(path)
   "brotli -f --quality=11 #{path} --output=#{path}.br"
-  end
-else
-  # not sure what to do here, not expecting this
-  raise "cannot determine brotli version"
 end
 
 def brotli(path)