remove hypertable ref from old migration
Created by: coury-clark
This hypertable statement got missed in https://github.com/sourcegraph/sourcegraph/pull/30781, so removing it here.
Test plan
N/A
Created by: coury-clark
This hypertable statement got missed in https://github.com/sourcegraph/sourcegraph/pull/30781, so removing it here.
N/A