Removed TreeView fake handlers for SQLite

fiori/server.js

@@ -1,32 +0,0 @@
-const cds = require('@sap/cds/lib')
-if (cds.requires.db?.kind === 'sqlite') {
-  cds.on ('serving:AdminService', srv => srv.prepend(() => {
-    const {Genres} = srv.entities
-  // Register a simplistic handler for hierarchical queries
-    srv.on('READ', Genres, (req,next) => {
-      const q = req.query
-      // Expand query on a single row
-      if (q.SELECT.recurse?.where?.[0].ref[0] === 'Distance') {
-        q.SELECT.where[0] = 'parent_ID'
-      // Initial query
-      } else if (!q.SELECT.search && !is_count(q)) {
-        q.SELECT.where ??= [ 'parent_ID is null' ]
-      }
-      // Use scalar subselect for DrillState
-      q.SELECT.from.as = 'g'
-      q.SELECT.columns = q.SELECT.columns.map (c => {
-        if (c.ref == 'DrillState') return { xpr:[`
-          CASE WHEN ( SELECT count(1) from ${Genres} where parent_ID = g.ID ) > 0
-          THEN 'collapsed' ELSE 'leaf' END`
-        ], as: 'DrillState' }
-        else return c
-      })
-      // Suppress error message: Feature "recurse" queries not supported.
-      delete q.SELECT.__proto__.recurse
-      delete q.SELECT.recurse
-      return next()
-    })
-  }))
-}
-
-const is_count = q => q.SELECT.columns?.length === 1 && q.SELECT.columns[0].func === 'count'