chore(remove FS::copyFile):

Now that #333 is merged and FS::copy works on non directory copyFile can be removed.

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/FileSystem.h

@@ -75,9 +75,6 @@ bool ensureFilePathExists(QString filenamepath);
  */
 bool ensureFolderPathExists(QString filenamepath);
 
-// TODO: remove in favor of FS::copy once #333 is merged
-bool copyFile(QString const& src, QString const& dst);
-
 /// @brief Copies a directory and it's contents from src to dest
 class copy {
    public: