clean up more dead code

bench/ChecksumBench.cpp

Index: bench/ChecksumBench.cpp
diff --git a/bench/ChecksumBench.cpp b/bench/ChecksumBench.cpp
index bac7bddc81187bcef4613ab43ea0900326239c83..cba9572aa330974529dbc85d67a6805a418c9859 100644
--- a/bench/ChecksumBench.cpp
+++ b/bench/ChecksumBench.cpp
@@ -9,12 +9,10 @@
 #include "SkChecksum.h"
 #include "SkMD5.h"
 #include "SkRandom.h"
-#include "SkSHA1.h"
 #include "SkTemplates.h"
 
 enum ChecksumType {
     kMD5_ChecksumType,
-    kSHA1_ChecksumType,
     kMurmur3_ChecksumType,
 };
 
@@ -42,7 +40,6 @@ protected:
     const char* onGetName() override {
         switch (fType) {
             case kMD5_ChecksumType: return "compute_md5";
-            case kSHA1_ChecksumType: return "compute_sha1";
             case kMurmur3_ChecksumType: return "compute_murmur3";
 
             default: SK_ABORT("Invalid Type"); return "";
@@ -59,14 +56,6 @@ protected:
                     md5.finish(digest);
                 }
             } break;
-            case kSHA1_ChecksumType: {
-                for (int i = 0; i < loops; i++) {
-                    SkSHA1 sha1;
-                    sha1.update(reinterpret_cast<uint8_t*>(fData), sizeof(fData));
-                    SkSHA1::Digest digest;
-                    sha1.finish(digest);
-                }
-            } break;
             case kMurmur3_ChecksumType: {
                 for (int i = 0; i < loops; i++) {
                     volatile uint32_t result = SkChecksum::Murmur3(fData, sizeof(fData));
@@ -84,5 +73,4 @@ private:
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_BENCH( return new ComputeChecksumBench(kMD5_ChecksumType); )
-DEF_BENCH( return new ComputeChecksumBench(kSHA1_ChecksumType); )
 DEF_BENCH( return new ComputeChecksumBench(kMurmur3_ChecksumType); )