Improve lit support (#3426)

This uses the same technique used in llvm-lit to enable
running on in-tree tests with out-of-tree builds.

So you can run something like this:

  ../binaryen-out/bin/binaryen-lit test/lit/

1 files changed, 0 insertions, 22 deletions

diff --git a/scripts/lit_wrapper.py b/scripts/lit_wrapper.py
deleted file mode 100644
index 19473b52f..000000000
--- a/scripts/lit_wrapper.py
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright 2020 WebAssembly Community Group participants
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from lit.main import main
-
-# A simple wrapper around `lit`'s main function, since it isn't otherwise
-# exposed.
-if __name__ == '__main__':
-    main()