bpf, vsock: Drop static vsock_bpf_prot initialization

vsock_bpf_prot is set up at runtime. Remove the superfluous init.

No functional change intended.

Fixes: 634f1a71 ("vsock: support sockmap")
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20241013-vsock-fixes-for-redir-v2-4-d6577bbfe742@rbox.co