SkRTConf: eliminate

src/images/SkPNGImageEncoder.cpp

Index: src/images/SkPNGImageEncoder.cpp
diff --git a/src/images/SkPNGImageEncoder.cpp b/src/images/SkPNGImageEncoder.cpp
index c3df5d10a874e5243b94d84c16b2e6f375aeb910..c4637d11b03a4fbbc6d0e37f0758e08a9d1aea00 100644
--- a/src/images/SkPNGImageEncoder.cpp
+++ b/src/images/SkPNGImageEncoder.cpp
@@ -10,7 +10,6 @@
 #include "SkColorPriv.h"
 #include "SkDither.h"
 #include "SkMath.h"
-#include "SkRTConf.h"
 #include "SkStream.h"
 #include "SkTemplates.h"
 #include "SkUtils.h"
@@ -36,11 +35,9 @@
 #endif
 
 #define DEFAULT_FOR_SUPPRESS_PNG_IMAGE_DECODER_WARNINGS true
-SK_CONF_DECLARE(bool, c_suppressPNGImageDecoderWarnings,
-                "images.png.suppressDecoderWarnings",
-                DEFAULT_FOR_SUPPRESS_PNG_IMAGE_DECODER_WARNINGS,
-                "Suppress most PNG warnings when calling image decode "
-                "functions.");
+// Suppress most PNG warnings when calling image decode functions.
+const bool c_suppressPNGImageDecoderWarnings{
+    DEFAULT_FOR_SUPPRESS_PNG_IMAGE_DECODER_WARNINGS};
 
 ///////////////////////////////////////////////////////////////////////////////