[p4-constraints] Remove inclusion of ast.proto.h (#66)
[p4-constraints] Remove inclusion of ast.proto.h (#66)

PiperOrigin-RevId: 416432271

Co-authored-by: PINS Team <d8bc6e31e36b6c5b063355e7265fdd2c3a37e310@google.com>
p4lang/p4-constraints,p4lang/p4-constraints