chore: remove duplicates

Author: C4illin

CHANGELOG.md

@@ -5,10 +5,8 @@
 
 ### Features
 
-* add HIDE_HISTORY option to control visibility of history page ([bed52ce](https://github.com/C4illin/ConvertX/commit/bed52cef17ff68ec5e8770705a1fdf038e02e607))
 * add HIDE_HISTORY option to control visibility of history page ([9d1c931](https://github.com/C4illin/ConvertX/commit/9d1c93155cc33ed6c83f9e5122afff8f28d0e4bf))
 * add potrace converter ([bdbd4a1](https://github.com/C4illin/ConvertX/commit/bdbd4a122c09559b089b985ea12c5f3e085107da))
-* Add support for .HIF files ([a5eaaa4](https://github.com/C4illin/ConvertX/commit/a5eaaa422a64506dd16d90d48a240556de33bc93))
 * Add support for .HIF files ([70705c1](https://github.com/C4illin/ConvertX/commit/70705c1850d470296df85958c02a01fb5bc3a25f))
 * add support for drag/drop of images ([ff2ef74](https://github.com/C4illin/ConvertX/commit/ff2ef7413542cf10ba7a6e246763bcecd6829ec1))