remove old schema file

This file is incompatible with all the following schema files. Therefore
remove it and make the installation a bit smoother.

schema/20181116.sql

@@ -1,85 +0,0 @@
-BEGIN;
-CREATE TABLE notifier (
-    id serial NOT NULL primary key,
-    name text NOT NULL
-);
-
-CREATE TABLE groups (
-    id serial NOT NULL primary key,
-    name text NOT NULL
-);
-
-CREATE TABLE nodes (
-    id bigserial NOT NULL primary key,
-    name text NOT NULL,
-    updated timestamp with time zone DEFAULT now() NOT NULL,
-    created timestamp with time zone DEFAULT now() NOT NULL,
-    message text NOT NULL
-);
-
-CREATE TABLE nodes_groups (
-    node_id bigint not null references nodes(id) on delete cascade,
-    group_id int not null references groups(id) on delete cascade,
-    unique(node_id, group_id)
-);
-
-CREATE TABLE commands (
-    id serial NOT NULL primary key,
-    name text NOT NULL,
-    command text NOT NULL,
-    updated timestamp with time zone DEFAULT now() NOT NULL,
-    created timestamp with time zone DEFAULT now() NOT NULL,
-    message text NOT NULL
-);
-
-CREATE TABLE checks (
-    id bigserial NOT NULL primary key,
-    node_id integer references nodes(id) on delete cascade,
-    command_id integer references commands(id) on delete cascade,
-    intval interval DEFAULT '00:05:00'::interval NOT NULL,
-    options jsonb DEFAULT '{}'::jsonb NOT NULL,
-    updated timestamp with time zone DEFAULT now() NOT NULL,
-    last_refresh timestamp with time zone,
-    enabled boolean not null DEFAULT true,
-    notifier_id integer NOT NULL,
-    notify boolean DEFAULT true NOT NULL,
-    message text NOT NULL,
-    unique(node_id, command_id)
-);
-
-CREATE TABLE notifications (
-    id bigserial NOT NULL primary key,
-    check_id bigint not null references checks(id) on delete cascade,
-    states integer[] not null,
-    output text,
-    inserted timestamp with time zone DEFAULT now() NOT NULL,
-    sent timestamp with time zone,
-    check_host text not null
-);
-
-CREATE TABLE active_checks (
-    check_id bigint NOT NULL unique references checks(id) on delete cascade,
-    cmdline text[] NOT NULL,
-    next_time timestamp with time zone DEFAULT now() NOT NULL,
-    states integer[] DEFAULT ARRAY[0] NOT NULL,
-    intval interval NOT NULL,
-    enabled boolean NOT NULL,
-    notice text
-);
-
-create table checks_notify(
-  check_id bigint not null references checks(id) on delete cascade,
-  notifier_id int not null references notifier(id) on delete cascade,
-  enabled bool not null default true,
-  unique(check_id, notifier_id)
-);
-
-CREATE INDEX ON active_checks(next_time) WHERE enabled;
-CREATE INDEX ON checks(updated, last_refresh nulls first);
-CREATE INDEX ON checks(node_id);
-CREATE INDEX ON checks(command_id);
-CREATE INDEX ON notifications(inserted) WHERE sent is null;
-CREATE INDEX ON notifications (check_id, inserted desc);
-CREATE INDEX ON commands(updated);
-CREATE INDEX ON nodes(updated);
-COMMIT;