[tracker/sam/website-docs] website: Update docs page

[Sam Thursfield <sthursfield src gnome org>]

commit 25fa185fbcde4e9b4417096edffe2ce4ff854052
Author: Sam Thursfield <sam afuera me uk>
Date:   Fri May 14 20:41:43 2021 +0200

    website: Update docs page
    
    Remove Tracker 2.x info.

 docs/website/docs/developer.md | 40 ++++++++++++----------------------------
 1 file changed, 12 insertions(+), 28 deletions(-)
---
diff --git a/docs/website/docs/developer.md b/docs/website/docs/developer.md
index b685541ad..1b8b06ba2 100644
--- a/docs/website/docs/developer.md
+++ b/docs/website/docs/developer.md
@@ -1,35 +1,19 @@
 # Developer Documentation
-    
-Application and platform developers using Tracker will interact with Tracker
-using one or more of the shared libraries it provides:
-
- * [libtracker-sparql](https://developer.gnome.org/libtracker-sparql/stable/) is
-   used to read and write data from the Tracker store using SPARQL.
- * [libtracker-control](https://developer.gnome.org/libtracker-control/stable/),
-   is used to manage Tracker daemons.
- * [libtracker-miner](https://developer.gnome.org/libtracker-miner/stable/) can
-   be used if you want to implement a new data provider while reusing existing
-   Tracker code.
-
-WARNING: The documention linked above is for out of date verions of Tracker 2.x.
-This is due to an [infrastructure
-issue](https://gitlab.gnome.org/Infrastructure/library-web/issues/50). See also
-[this bug](https://gitlab.gnome.org/GNOME/tracker/-/issues/100).
-
-The following documentation may be useful:
-
- * [Tracker ontology documentation](https://developer.gnome.org/ontology/stable/).
- * [Tracker documentation on wiki.gnome.org](https://wiki.gnome.org/Projects/Tracker).
 
-For working on Tracker itself, read the [HACKING.md
-file](https://gitlab.gnome.org/GNOME/tracker/-/blob/master/HACKING.md).
+All access to Tracker is done with one library. Documentation is found here:
 
-## Preview Documentation
+  * [libtracker-sparql](../api-preview/libtracker-sparql-3/)
 
-We provide an online version of the documentation for the latest in-development version
-of Tracker. You can browse it here:
+The standard data ontologies are documented here:
 
-  * [libtracker-sparql](../api-preview/libtracker-sparql-3/)
   * [ontology](../api-preview/ontology-3/)
 
-Be aware that some libraries from Tracker 2.0 will not be available for Tracker 3.0.
+!!! note
+    The documentation at developer.gnome.org is [out of 
date](https://gitlab.gnome.org/GNOME/tracker/-/issues/100)
+
+The following documentation may also be useful:
+
+ * [Tracker documentation on wiki.gnome.org](https://wiki.gnome.org/Projects/Tracker).
+
+For working on Tracker itself, read the [HACKING.md
+file](https://gitlab.gnome.org/GNOME/tracker/-/blob/master/HACKING.md).