graphics/epsonscan2: Remove old unnecessary patches
PR: 284127
Approved by: J.R. Oldroyd <fbsd@opal.com> (maintainer)
Tested by: rhurlin
Fixes: 345e28cb1c35 (Update 6.6.40.0 => 6.7.70.0)
MFH: 2025Q1
(cherry picked from commit 6d7fd423e41f23a77cf6665f6ebfdf2a4fed71f8)