build: only require cups >=1.7
The first commit removes some checks that are only needed for cups < 1.3.
The second reduces our version checks to cups >= 1.7 because we don't use any API added after that.
Fixes #1950 (closed)
The first commit removes some checks that are only needed for cups < 1.3.
The second reduces our version checks to cups >= 1.7 because we don't use any API added after that.
Fixes #1950 (closed)