Removing obsolete code

Author: murilopolese

ui/arduino/store.js

@@ -1509,7 +1509,7 @@ async function uploadFolder(srcPath, destPath, dataConsumer) {
   let allFiles = await disk.ilistAllFiles(srcPath)
   for (let i in allFiles) {
     const file = allFiles[i]
-    const relativePath = file.path.substring(srcPath.length+1)
+    const relativePath = file.path.substring(srcPath.length)
     if (file.type === 'folder') {
       await serial.createFolder(
         serial.getFullPath(