I'm trying to clean up packages on a remote computer and running emerge 
--depclean  list some packages that I am not sure about:

 acct-group/video
    selected: 0-r1 
   protected: none 
     omitted: none 

 dev-libs/jansson
    selected: 2.13.1-r1 
   protected: none 
     omitted: none 

 virtual/logger
    selected: 0-r1 
   protected: none 
     omitted: none 

 dev-perl/Switch
    selected: 2.170.0 
   protected: none 
     omitted: none 

 x11-drivers/xf86-input-libinput
    selected: 0.30.0 
   protected: none 
     omitted: none 

 sys-auth/passwdqc
    selected: 1.4.0-r1 
   protected: none 
     omitted: none 

 x11-drivers/xf86-video-vesa
    selected: 2.5.0 
   protected: none 
     omitted: none 

 x11-libs/libvdpau
    selected: 1.4 
   protected: none 
     omitted: none 

 x11-drivers/xf86-video-fbdev
    selected: 0.5.0-r1 
   protected: none 
     omitted: none 

 x11-drivers/xf86-video-dummy
    selected: 0.3.8 
   protected: none 
     omitted: none 

 acct-user/ldap
    selected: 0 
   protected: none 
     omitted: none 

 app-admin/metalog
    selected: 20181125 
   protected: none 
     omitted: none 

 x11-drivers/xf86-video-amdgpu
    selected: 19.1.0 
   protected: none 
     omitted: none 

 dev-java/ant-owanttask
    selected: 1.3.2 
   protected: none 
     omitted: none 

 acct-group/ldap
    selected: 0 
   protected: none 
     omitted: none 

 dev-java/xalan
    selected: 2.7.2-r1 
   protected: none 
     omitted: none 

 dev-java/bcel
    selected: 6.0_rc3 
   protected: none 
     omitted: none 

 dev-java/xalan-serializer
    selected: 2.7.2-r1 
   protected: none 
     omitted: none

Many of these packages are I see on my other systems and I think they are 
needed like:
acct-group/video 
dev-libs/jansson
dev-perl/Switch
x11-libs/libvdpau


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