[mips] Update release notes to account for revert.
llvm-svn: 237433
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 72fc157..a10f7e0 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -45,8 +45,7 @@
* Fixed multiple segfaults and assertions in the disassembler when
disassembling instructions that have memory operands.
-* Fixed multiple cases of suboptimal code generation involving ``$zero`` and
- redundant sign/zero extension.
+* Fixed multiple cases of suboptimal code generation involving ``$zero``.
Non-comprehensive list of changes in 3.6.0
==========================================
