[olympic/developer-handbook] Remove Ox submodules from project structure

developer-handbook.md

@@ -44,17 +44,8 @@ All components have a platform indicator next to them:
         * gba - GBA implementation (PG)
         * glfw - GLFW implementation (P-)
 * deps - project dependencies
-  * Ox - Library of things useful for portable bare metal and userland code. Not really that external...
-    * clargs - Command Line Args processing (PG)
-    * claw - Reads and writes Metal or Organic Claw with header to indicate which
-    * event - Qt-like signal system (PG)
-    * fs - file system (PG)
-	 * logconn - connects logging to Bullock (P-)
-    * mc - Metal Claw serialization, builds on model (PG)
-    * oc - Organic Claw serialization (wrapper around JsonCpp), builds on model (P-)
-    * model - Data structure modelling (PG)
-	 * preloader - library for handling preloading of data (PG)
-    * std - Standard-ish Library with a lot missing and some things added (PG)
+  * Ox - Library of things useful for portable bare metal and userland code.
+    Not really that external... (PG)
   * GlUtils - OpenGL helpers (P-)
   * teagba - GBA assembly startup code (mostly pulled from devkitPro under MPL
 	          2.0), and custom GBA hardware interop code (-G)
@@ -177,6 +168,9 @@ Instead of throwing exceptions, all engine code should return
 For the sake of consistency, try to stick to ```ox::Error``` in non-engine code
 as well, but non-engine code is free to use exceptions when they make sense.
 
+Exceptions should generally just use ```OxException```, which is bascially an
+exception form of ```ox::Error```.
+
 ### File I/O
 
 All engine file I/O should go through Keel, which should go through