Revert "Finally formalise our defacto line-ending policy"

This reverts commit dccebdd.

Author: ldrumm

.gitattributes

@@ -1,10 +1,3 @@
-# Checkout as native, commit as LF except in specific circumstances
-* text=auto
-*.bat text eol=crlf
-*.rc text eol=crlf
-*.sln text eol=crlf
-*.natvis text eol=crlf
-
 libcxx/src/**/*.cpp     merge=libcxx-reformat
 libcxx/include/**/*.h   merge=libcxx-reformat
 

clang-tools-extra/clangd/test/.gitattributes

@@ -360,12 +360,6 @@ Best practices for regression tests
 - Try to give values (including variables, blocks and functions) meaningful
   names, and avoid retaining complex names generated by the optimization
   pipeline (such as ``%foo.0.0.0.0.0.0``).
-- If your tests depend on specific input file encodings, beware of line-ending
-  issues across different platforms, and in the project's history. Before you
-  commit tests that depend on explicit encodings, consider adding filetype or
-  specific line-ending annotations to a `<.gitattributes
-  https://git-scm.com/docs/gitattributes#_effects>`_ file in the appropriate
-  directory in the repository.
 
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