Reduce blank lines after package and imports from 2 to 1 (#1153)
Reduce blank lines after package and imports from 2 to 1 (#1153)

In helix style for IntelliJ, there are 2 blank lines after package and imports. We would like to reduce them to only 1 line.
lei-xia/helix,dasahcc/helix,dasahcc/helix,apache/helix,lei-xia/helix,dasahcc/helix,dasahcc/helix,lei-xia/helix,dasahcc/helix,lei-xia/helix,apache/helix,apache/helix,lei-xia/helix,apache/helix,apache/helix,apache/helix,dasahcc/helix,lei-xia/helix