net_sched: skbprio: Remove overly strict queue assertions

In the Linux kernel, the following vulnerability has been resolved:

net_sched: skbprio: Remove overly strict queue assertions

In the current implementation, skbprio enqueue/dequeue contains an assertion

that fails under certain conditions when SKBPRIO is used as a child qdisc under

TBF with specific parameters. The failure occurs because TBF sometimes peeks at

packets in the child qdisc without actually dequeuing them when tokens are

unavailable.

This peek operation creates a discrepancy between the parent and child qdisc

queue length counters. When TBF later receives a high-priority packet,

SKBPRIO's queue length may show a different value than what's reflected in its

internal priority queue tracking, triggering the assertion.

The fix removes this overly strict assertions in SKBPRIO, they are not

necessary at all.