Update CHANGELOG.md

Author: maxkadushkin

CHANGELOG.md

@@ -48,7 +48,6 @@
 * Added the signature settings window with the ability to draw and add text to signatures
 * Added the ability to stretch fixed forms to fit the table cell size using the context menu
 * Added the Protection tab, which duplicates the Protect functionality in the File menu 
-* Added the Protect Form button, which closes the form editing and switches it to filling mode
 * Added saving to the `MD` format
 
 #### PDF Editor