[z2068] Drop dead code (non-existed spells)

(based on commit [z1769] - 3c9a664)
[z2069] Drop the Skill Discovery and Skill Extra Items - not related to classic

Signed-off-by: TheLuda <theluda@getmangos.com>

(based on commit [z1838] - 49daa44)
[z2070] Update Write Liner Path in Packet Builder for 1.12.1

This will fix move maps, but will not fix the client crashes

Close #7

Signed-off-by: Xfurry <xfurry@scriptdev2.com>