fix: remove undeployed api_tokens migrations (006 + 007)

internal/database/migrations/006_add_api_tokens.sql

@@ -1,11 +0,0 @@
-CREATE TABLE IF NOT EXISTS api_tokens (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
-    name TEXT NOT NULL DEFAULT '',
-    token_hash TEXT NOT NULL UNIQUE,
-    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
-    last_used_at DATETIME
-);
-
-CREATE INDEX IF NOT EXISTS idx_api_tokens_token_hash ON api_tokens(token_hash);
-CREATE INDEX IF NOT EXISTS idx_api_tokens_user_id ON api_tokens(user_id);

internal/database/migrations/007_drop_api_tokens.sql

@@ -1 +0,0 @@
-DROP TABLE IF EXISTS api_tokens;