refactor: Remove dev flag from bootstrap json

With this, the database debug flag can only be activated when using swift
with a development build. Setting the development flag in the json also
didn't worked previously as expected because the corresponding function
to get the flag in application.cpp was called before the setup was loaded.

resources/share/shared/bootstrap/bootstrap.json

@@ -8,7 +8,6 @@
     "dbRootDirectoryUrl": {
         "url": "https://datastore.swift-project.org/"
     },
-    "development": false,
     "mappingMinimumVersion": "0.9.0",
     "ncepGlobalForecastSystemUrl": {
         "url": "http://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_0p50.pl"