door: don't require default row in database

dist/sql/pvv_mysql.sql

@@ -39,11 +39,6 @@ CREATE TABLE motd (
 );
 
 CREATE TABLE door (
-  `time` DATETIME PRIMARY KEY,
+  `time` INTEGER PRIMARY KEY,
   `open` BOOLEAN NOT NULL
 );
-
-INSERT INTO
-  `door`(`time`, `open`)
-VALUES
-  (0, FALSE);

dist/sql/pvv_sqlite.sql

@@ -38,9 +38,7 @@ CREATE TABLE "motd" (
   "content" TEXT NOT NULL
 );
 
-CREATE TABLE "door" ("time" INTEGER PRIMARY KEY, "open" BOOLEAN);
-
-INSERT INTO
-  "door"("time", "open")
-VALUES
-  (0, FALSE);
+CREATE TABLE "door" (
+  "time" INTEGER PRIMARY KEY,
+  "open" BOOLEAN NOT NULL
+);