Revert "Finally formalise our defacto line-ending policy"

This reverts commit dccebddb3b802c4c1fe287222e454b63f850f012.

.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

@@ -1,3 +0,0 @@
-input-mirror.test text eol=crlf
-too_large.test text eol=crlf
-protocol.test text eol=crlf

clang/test/.gitattributes

@@ -1,4 +0,0 @@
-FixIt/fixit-newline-style.c text eol=crlf
-Frontend/system-header-line-directive-ms-lineendings.c text eol=crlf
-Frontend/rewrite-includes-mixed-eol-crlf.* text eol=crlf
-clang/test/Frontend/rewrite-includes-mixed-eol-lf.h text eolf=lf

llvm/docs/TestingGuide.rst

@@ -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.
 
 Extra files
 -----------

llvm/test/FileCheck/.gitattributes

@@ -1 +0,0 @@
-dos-style-eol.txt text eol=crlf

llvm/test/tools/llvm-ar/Inputs/.gitattributes

@@ -1 +0,0 @@
-mri-crlf.mri text eol=crlf

llvm/utils/lit/tests/Inputs/shtest-shell/.gitattributes

@@ -1 +0,0 @@
-*.dos text eol=crlf