remove align16 calls in skhader context sizes. will handle this elsewhere as needed

src/effects/gradients/SkLinearGradient.cpp

Index: src/effects/gradients/SkLinearGradient.cpp
diff --git a/src/effects/gradients/SkLinearGradient.cpp b/src/effects/gradients/SkLinearGradient.cpp
index 40503c96f18fbd219003da778e28c4a048d00587..15d461960dd8f6b97230d989bbce7d497bc7b660 100644
--- a/src/effects/gradients/SkLinearGradient.cpp
+++ b/src/effects/gradients/SkLinearGradient.cpp
@@ -90,8 +90,8 @@ void SkLinearGradient::flatten(SkWriteBuffer& buffer) const {
 
 size_t SkLinearGradient::onContextSize(const ContextRec& rec) const {
     return use_4f_context(rec, fGradFlags)
-        ? SkAlign16(sizeof(LinearGradient4fContext))
-        : SkAlign16(sizeof(LinearGradientContext));
+        ? sizeof(LinearGradient4fContext)
+        : sizeof(LinearGradientContext);
 }
 
 SkShader::Context* SkLinearGradient::onCreateContext(const ContextRec& rec, void* storage) const {