proxy: scheduler: only do a single round of time alignment and drop counter

proxy: scheduler: only do a single round of time alignment and drop counter

not much value in waiting an extra minute, that doesn't really
guarantees better scheduling (as in, less impact on startup).

Dropping that also allows easily to drop the counter by just moving
the sleep to the beginning of the loop.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>