Delete tests/test262.patch

[saghul]

We don't use it.

[bnoordhuis]

Suggestion:

diff --git a/doc/quickjs.texi b/doc/quickjs.texi
index c335eeb..6a4ba10 100644
--- a/doc/quickjs.texi
+++ b/doc/quickjs.texi
@@ -198,16 +198,8 @@ can be installed in the QuickJS source directory with:
 
 @example
 git clone https://github.com/tc39/test262.git test262
-cd test262
-patch -p1 < ../tests/test262.patch
-cd ..
 @end example
 
-The patch adds the implementation specific @code{harness} functions
-and optimizes the inefficient RegExp character classes and Unicode
-property escapes tests (the tests themselves are not modified, only a
-slow string initialization function is optimized).
-
 The tests can be run with
 @example
 make test2

That whole section is probably wrong-ish because we have tc39/test262 as a git submodule.

[saghul]

Good point, I'll adjust it!