remove xdiff/diffy/rb-bsdiff

Gemfile.lock

@@ -24,16 +24,6 @@ GIT
       railties
       websocket-driver
 
-PATH
-  remote: /gems/rb-bsdiff
-  specs:
-    rb-bsdiff (0.1.0)
-
-PATH
-  remote: /gems/xdiff-rb
-  specs:
-    xdiff (0.0.1)
-
 GIT
   remote: ssh://git@git.dy.mk:2221/dymk/has_aux_table.git
   revision: fb7912e3536c339cba55af54c3e647f69f5997f3
@@ -178,7 +168,6 @@ GEM
     dhash-vips (0.2.3.0)
       ruby-vips (~> 2.0, != 2.1.1, != 2.1.0)
     diff-lcs (1.5.1)
-    diffy (3.4.3)
     discard (1.4.0)
       activerecord (>= 4.2, < 9.0)
     disco (0.5.1)
@@ -693,7 +682,6 @@ DEPENDENCIES
   debug (~> 1.10)
   devise (~> 4.9)
   dhash-vips
-  diffy
   discard
   disco
   docx
@@ -731,7 +719,6 @@ DEPENDENCIES
   rails-controller-testing
   rails_live_reload!
   rails_semantic_logger (~> 4.17)
-  rb-bsdiff!
   react_on_rails
   ripcord
   rouge
@@ -769,7 +756,6 @@ DEPENDENCIES
   unicode_plot
   web-console
   webdrivers
-  xdiff!
   zstd-ruby
 
 RUBY VERSION