Docs/cleanup: refresh CONTEXT, update ISurface status, remove dead code

- rewrite CONTEXT.md for the current architecture, interfaces, netvars,
  menu tree, bones/ESP, aimbot/vischeck, triggerbot, silent aim and ABH
- update ISURFACE_STATUS.md: DrawLine slot, current menu/config path,
  9 build TUs, current file layout
- remove the stale root-level `tree` file
- drop unused class_health_off/per-class health scan (NPC HP is not
  networked), surf_call_slot, and unused scancode helpers

1 files changed, 0 insertions, 9 deletions

diff --git a/tree b/tree
deleted file mode 100644
index a03e5af..0000000
--- a/tree
+++ /dev/null
@@ -1,9 +0,0 @@
-HL2hake
-
-Climb
-  Active: <state>
-  Bind: <bind>
-Bunnyhop
-  Active: <state>
-ABH
-  Active: <state>