Update Flutter.gitignore

Removed Visual Studio Code related lines

Co-authored-by: Tim Hunter <thorrsson@github.com>

Flutter.gitignore

@@ -11,11 +11,6 @@
 .svn/
 
 
-# Visual Studio Code related
-.classpath
-.project
-.settings/
-.vscode/*
 
 # Flutter repo-specific
 /bin/cache/