Removed overcomplicated updates loading

The mechanism was replaced by loading updated directly by id to the initial list. There are two factors why yesterday-me was dumb:

1) By asynchronously loading update state, you have no control over it - hence no search
2) It's incredibly wasteful; running that hardcore search on every query? Not cool
...and from UX stand-point having updates inlined right under installed modules is by far better than nitpicking it from the list or in the search

app/src/main/java/com/topjohnwu/magisk/data/database/Repo.kt

@@ -11,6 +11,9 @@ interface RepoBase {
     fun getRepos(offset: Int, limit: Int = LIMIT): List<Repo>
     fun searchRepos(query: String, offset: Int, limit: Int = LIMIT): List<Repo>
 
+    @Query("SELECT * FROM repos WHERE id = :id AND versionCode > :versionCode LIMIT 1")
+    fun getUpdatableRepoById(id: String, versionCode: Int): Repo?
+
     companion object {
         const val LIMIT = 10
     }