[libxslt] Remove generated file libxsltclass.txt from version control

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 5307ec9978900cbc31c483cb30b95506d7539eac
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Mon Oct 21 12:50:50 2019 +0200

    Remove generated file libxsltclass.txt from version control

 .gitignore              |   1 +
 python/libxsltclass.txt | 238 ------------------------------------------------
 2 files changed, 1 insertion(+), 238 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index a30f8d07..22e28dc5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,6 +41,7 @@ python/libxslt-py.c
 python/libxslt-py.h
 python/libxslt.py
 python/libxsltclass.py
+python/libxsltclass.txt
 python/tests/foo
 stamp-h1
 tests/xmlspec/debug