Revert "Reland "make SkJumper stages normal Skia code""

This reverts commit 78cb579f33943421afc8423a39867fcfd69fed44.

Reason for revert: lowp should be controlled by defined(JUMPER_IS_SCALAR), not defined(__clang__).  So close.

Original change's description:
> Reland "make SkJumper stages normal Skia code"
> 
> This is a reland of 22e536e3a1a09405d1c0e6f071717a726d86e8d4
> 
> Now with fixed #include paths in SkRasterPipeline_opts.h,
> and -ffp-contract=fast for the :hsw target to minimize
> diffs on non-Windows Clang AVX2/AVX-512 bots.
> 
> Original change's description:
> > make SkJumper stages normal Skia code
> >
> > Enough clients are using Clang now that we can say, use Clang to build
> > if you want these software pipeline stages to go fast.
> >
> > This lets us drop the offline build aspect of SkJumper stages, instead
> > building as part of Skia using the SkOpts framework.
> >
> > I think everything should work, except I've (temporarily) removed
> > AVX-512 support.  I will put this back in a follow up.
> >
> > I have had to drop Windows down to __vectorcall and our narrower
> > stage calling convention that keeps the d-registers on the stack.
> > I tried forcing sysv_abi, but that crashed Clang.  :/
> >
> > Added a TODO to up the same narrower stage calling convention
> > for lowp stages... we just *don't* today, for no good reason.
> >
> > Change-Id: Iaaa792ffe4deab3508d2dc5d0008c163c24b3383
> > Reviewed-on: https://skia-review.googlesource.com/110641
> > Commit-Queue: Mike Klein <mtklein@chromium.org>
> > Reviewed-by: Herb Derby <herb@google.com>
> > Reviewed-by: Florin Malita <fmalita@chromium.org>
> 
> Change-Id: I44f2c03d33958e3807747e40904b6351957dd448
> Reviewed-on: https://skia-review.googlesource.com/112742
> Reviewed-by: Mike Klein <mtklein@chromium.org>

TBR=mtklein@chromium.org,herb@google.com,fmalita@chromium.org

Change-Id: Ie64da98f5187d44e03c0ce05d7cb189d4a6e6663
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/112743
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/gn/gn_to_bp.py b/gn/gn_to_bp.py
index 4c8cba75d5..0dfada3ea2 100644
--- a/gn/gn_to_bp.py
+++ b/gn/gn_to_bp.py
@@ -289,8 +289,7 @@ with open('Android.bp', 'w') as f:
                                defs['ssse3'] +
                                defs['sse41'] +
                                defs['sse42'] +
-                               defs['avx'  ] +
-                               defs['hsw'  ]),
+                               defs['avx'  ]),
 
     'dm_includes'       : bpfmt(8, dm_includes),
     'dm_srcs'           : bpfmt(8, dm_srcs),