main/lua-dbi: fix depends

fixes #4619

main/lua-dbi/APKBUILD

@@ -4,7 +4,7 @@
 pkgname=lua-dbi
 _realname=luadbi
 pkgver=0.5
-pkgrel=5
+pkgrel=6
 pkgdesc="A database interface library for Lua"
 url="http://code.google.com/p/luadbi"
 arch="all"
@@ -47,19 +47,19 @@ _mv_backend() {
 
 sqlite() {
 	pkgdesc="lua-dbi SQLite backend"
-	depends="lua-dbi sqlite"
+	depends="lua-dbi"
 	_mv_backend sqlite3
 }
 
 mysql() {
 	pkgdesc="lua-dbi MySQL backend"
-	depends="lua-dbi mysql"
+	depends="lua-dbi"
 	_mv_backend mysql
 }
 
 postgresql() {
 	pkgdesc="lua-dbi PostgreSQL backend"
-	depends="lua-dbi postgresql"
+	depends="lua-dbi"
 	_mv_backend postgresql
 }