sys/shell: Removed fragments of old driver
sys/shell: Removed fragments of old driver

The shell handlers of the old, depreciated and removed LTC4150 driver are still
in place. This commit removes them

mtausig/RIOT,cladmi/RIOT,kYc0o/RIOT,A-Paul/RIOT,smlng/RIOT,mfrey/RIOT,ant9000/RIOT,lazytech-org/RIOT,kaspar030/RIOT,BytesGalore/RIOT,A-Paul/RIOT,OTAkeys/RIOT,toonst/RIOT,A-Paul/RIOT,yogo1212/RIOT,ant9000/RIOT,A-Paul/RIOT,aeneby/RIOT,mtausig/RIOT,lazytech-org/RIOT,josephnoir/RIOT,mfrey/RIOT,lazytech-org/RIOT,OlegHahm/RIOT,x3ro/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,rfuentess/RIOT,basilfx/RIOT,BytesGalore/RIOT,OlegHahm/RIOT,cladmi/RIOT,BytesGalore/RIOT,authmillenon/RIOT,smlng/RIOT,mtausig/RIOT,basilfx/RIOT,x3ro/RIOT,smlng/RIOT,toonst/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,kYc0o/RIOT,kYc0o/RIOT,jasonatran/RIOT,miri64/RIOT,jasonatran/RIOT,OlegHahm/RIOT,mfrey/RIOT,basilfx/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,miri64/RIOT,aeneby/RIOT,mfrey/RIOT,miri64/RIOT,cladmi/RIOT,cladmi/RIOT,kaspar030/RIOT,kaspar030/RIOT,josephnoir/RIOT,rfuentess/RIOT,lazytech-org/RIOT,aeneby/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,ant9000/RIOT,OlegHahm/RIOT,x3ro/RIOT,josephnoir/RIOT,ant9000/RIOT,yogo1212/RIOT,toonst/RIOT,rfuentess/RIOT,toonst/RIOT,smlng/RIOT,kaspar030/RIOT,kYc0o/RIOT,josephnoir/RIOT,rfuentess/RIOT,BytesGalore/RIOT,rfuentess/RIOT,toonst/RIOT,x3ro/RIOT,jasonatran/RIOT,mtausig/RIOT,mfrey/RIOT,jasonatran/RIOT,kaspar030/RIOT,yogo1212/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,A-Paul/RIOT,authmillenon/RIOT,authmillenon/RIOT,OTAkeys/RIOT,smlng/RIOT,BytesGalore/RIOT,aeneby/RIOT,authmillenon/RIOT,aeneby/RIOT,miri64/RIOT,basilfx/RIOT,authmillenon/RIOT,cladmi/RIOT,x3ro/RIOT,RIOT-OS/RIOT,josephnoir/RIOT,OlegHahm/RIOT,mtausig/RIOT,miri64/RIOT,authmillenon/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,ant9000/RIOT,basilfx/RIOT