Force everything to use python3 for consistency.
Rather than "whatever people have installed as 'python' on their machine".
I've removed check-symbols.py because that's been broken for years and
we never even noticed, and I'm not sure it's worth fixing.
Test: treehugger, manual
Change-Id: Ieb996bbdf790a18d4b1fb46a409cc240ba2a2a49
diff --git a/libc/kernel/tools/update_all.py b/libc/kernel/tools/update_all.py
index cef24dd..d878ec6 100755
--- a/libc/kernel/tools/update_all.py
+++ b/libc/kernel/tools/update_all.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
#
import sys, cpp, kernel, glob, os, re, getopt, clean_header, subprocess, shutil
from defaults import *