chore: remove old migration files

src/migrations/000_initial.sql

@@ -1,4 +0,0 @@
-create table migration_version (
-    version integer,
-    updated_at integer
-);

src/migrations/001_plants.sql

@@ -1,6 +0,0 @@
-create table plants (
-    id integer primary key,
-    name text not null,
-    species text not null,
-    description text not null
-);

src/migrations/003_events.sql

@@ -1,9 +0,0 @@
-create table events (
-    id integer primary key,
-    plant_id integer not null
-        references plants (id)
-        on delete cascade,
-    event_type text not null,
-    date text not null,
-    description text not null
-);

src/migrations/004_auth.sql

@@ -1,14 +0,0 @@
-create table users (
-    id integer primary key,
-    username text unique not null,
-    password_hash text not null,
-    admin boolean not null
-);
-
-create table sessions (
-    id integer primary key,
-    user_id integer not null
-        references users (id)
-        on delete cascade,
-    unique (id, user_id)
-);