Revert "qrtr: orphan socket in qrtr_release()"

This reverts commit b7d3d6df.

This is a preparation change for merging android11-5.4.55 into
msm-5.4 branch. Equivalent change was already merged into
downstream via:

0d116bcb net: qrtr: Detach socket from sock during release

Change-Id: Ic028abd16de40c7e0b93ec7f6cf45303103eb087
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>