Update create-matrix.js

scripts/create-matrix.js

@@ -1,6 +1,7 @@
 const file = require('./helpers/file')
 
 file.list().then(files => {
+  files = files.filter(file => file !== 'channels/unsorted.m3u')
   const country = files.map(file => file.replace(/channels\/|\.m3u/gi, ''))
   const matrix = { country }
   const output = `::set-output name=matrix::${JSON.stringify(matrix)}`