remove unused SkImageEncoderFns bits

  - remove a couple transform_scanline_procs
  - remove all use of SK_RESTRICT
  - remove the color table
  - reformat arguments etc.

Change-Id: I545dc6d74fffc7d95e3d53fb26ee748b94f93b65
Reviewed-on: https://skia-review.googlesource.com/c/167683
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
diff --git a/src/images/SkJpegEncoder.cpp b/src/images/SkJpegEncoder.cpp
index 239f9d8..d6828b4 100644
--- a/src/images/SkJpegEncoder.cpp
+++ b/src/images/SkJpegEncoder.cpp
@@ -221,8 +221,10 @@
     for (int i = 0; i < numRows; i++) {
         JSAMPLE* jpegSrcRow = (JSAMPLE*) srcRow;
         if (fEncoderMgr->proc()) {
-            fEncoderMgr->proc()((char*)fStorage.get(), (const char*)srcRow, fSrc.width(),
-                                fEncoderMgr->cinfo()->input_components, nullptr);
+            fEncoderMgr->proc()((char*)fStorage.get(),
+                                (const char*)srcRow,
+                                fSrc.width(),
+                                fEncoderMgr->cinfo()->input_components);
             jpegSrcRow = fStorage.get();
         }