Remove unused special member functions and reformat.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195077 91177308-0d34-0410-b5e6-96231b3b80d8
Implement AArch64 neon instructions class SIMD lsone and SIMD lone-post.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195078 91177308-0d34-0410-b5e6-96231b3b80d8