Remove the generated mocks CI check

[evan-forbes]

    The crux is that v0.34.23 changes the `Peer` interface but in order to make it non-breaking, a new interface was introduced:

type EnvelopeSender interface {
	SendEnvelope(Envelope) bool
	TrySendEnvelope(Envelope) bool
}

and a few shim functions were added to support the old Peer which has Send and the new Peer which has SendEnvelope (NOTE: in v0.37 the interface is then broken).

I'm going to merge this now but either we:

1. rollback the tests in tendermint/tendermint@bdedf2e#diff-845bad6985bed7731e25d658c3bfbc7f5639ebf2a739b8074fe9614ce71941bc that change Send to SendEnvelope
2. Turn off the mockery checker
3. Bring the change in v0.37 forward such that the Peer interface has SendEnvelope as well.

Originally posted by @cmwaters in #906 (comment)

[cmwaters]

Closing by #917