Revert "byte align everything in SkSLInterpreter"

This reverts commit e5288369c89e85b4530e2c96efee7b70270d3f2f.

Reason for revert: bad merge with code adding calls to align()

Original change's description:
> byte align everything in SkSLInterpreter
> 
> It's nicer to write code without having to think about alignment,
> and this appears to be faster too:
> 
>     $ ninja -C out nanobench && out/nanobench --config 8888 -m GM_runtime_cf_interp_1 --loops 0
>     Before:  24/24  MB	1	18.4ms	18.5ms	18.5ms	18.6ms	0%	█▆▅▅▅▁▅▅▅▅	8888	GM_runtime_cf_interp_1
>     After:   23/23  MB	1	16.6ms	16.6ms	16.6ms	16.7ms	0%	▁▁▃█▅▂▁▁█▅	8888	GM_runtime_cf_interp_1
> 
> While byte-aligning things I noticed the write16 and write32 calls could
> do all their bytes at once, in one call to resize() instead of 2-4 calls
> push_back.
> 
> Looking at that disassembly, I noticed vector_instruction can be static.
> 
> Change-Id: I22985b49d6745797da10bbd6b6f2002a7618f2ae
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/214338
> Reviewed-by: Brian Osman <brianosman@google.com>
> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
> Commit-Queue: Mike Klein <mtklein@google.com>

TBR=mtklein@google.com,brianosman@google.com,ethannicholas@google.com

Change-Id: Id4d0c1dfcfe8b2f91cf90e636cae5bef760df0e6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/214353
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
4 files changed