Remove useless options from bench

BUG=skia:
R=jcgregorio@google.com, bensong@google.com, bsalomon@google.com, robertphillips@google.com, reed@google.com

Author: kelvinly@google.com

Review URL: https://codereview.chromium.org/375863006
diff --git a/bench/Benchmark.cpp b/bench/Benchmark.cpp
index ae614f0..04223dc 100644
--- a/bench/Benchmark.cpp
+++ b/bench/Benchmark.cpp
@@ -16,8 +16,6 @@
 
 Benchmark::Benchmark() {
     fForceAlpha = 0xFF;
-    fForceAA = true;
-    fForceFilter = false;
     fDither = SkTriState::kDefault;
     fOrMask = fClearMask = 0;
 }
@@ -40,9 +38,8 @@
 
 void Benchmark::setupPaint(SkPaint* paint) {
     paint->setAlpha(fForceAlpha);
-    paint->setAntiAlias(fForceAA);
-    paint->setFilterLevel(fForceFilter ? SkPaint::kLow_FilterLevel
-                                       : SkPaint::kNone_FilterLevel);
+    paint->setAntiAlias(true);
+    paint->setFilterLevel(SkPaint::kNone_FilterLevel);
 
     paint->setFlags((paint->getFlags() & ~fClearMask) | fOrMask);
 
diff --git a/bench/Benchmark.h b/bench/Benchmark.h
index db70bbe..8e8eeff 100644
--- a/bench/Benchmark.h
+++ b/bench/Benchmark.h
@@ -76,14 +76,6 @@
         fForceAlpha = alpha;
     }
 
-    void setForceAA(bool aa) {
-        fForceAA = aa;
-    }
-
-    void setForceFilter(bool filter) {
-        fForceFilter = filter;
-    }
-
     void setDither(SkTriState::State state) {
         fDither = state;
     }
@@ -115,8 +107,6 @@
 
 private:
     int     fForceAlpha;
-    bool    fForceAA;
-    bool    fForceFilter;
     SkTriState::State  fDither;
     uint32_t    fOrMask, fClearMask;
 
diff --git a/bench/benchmain.cpp b/bench/benchmain.cpp
index c1c1e3f..f3fdb9f 100644
--- a/bench/benchmain.cpp
+++ b/bench/benchmain.cpp
@@ -225,8 +225,6 @@
 DEFINE_bool(scale,  false,  "Scale canvas before bench run?");
 DEFINE_bool(clip,   false,  "Clip canvas before bench run?");
 
-DEFINE_bool(forceAA,        true,     "Force anti-aliasing?");
-DEFINE_bool(forceFilter,    false,    "Force bitmap filtering?");
 DEFINE_string(forceDither, "default", "Force dithering: true, false, or default?");
 DEFINE_bool(forceBlend,     false,    "Force alpha blending?");
 
@@ -415,8 +413,6 @@
     }
     writer.option("mode", FLAGS_mode[0]);
     writer.option("alpha", SkStringPrintf("0x%02X", alpha).c_str());
-    writer.option("antialias", SkStringPrintf("%d", FLAGS_forceAA).c_str());
-    writer.option("filter", SkStringPrintf("%d", FLAGS_forceFilter).c_str());
     writer.option("dither",  SkTriState::Name[dither]);
 
     writer.option("rotate", SkStringPrintf("%d", FLAGS_rotate).c_str());
@@ -476,8 +472,6 @@
         }
 
         bench->setForceAlpha(alpha);
-        bench->setForceAA(FLAGS_forceAA);
-        bench->setForceFilter(FLAGS_forceFilter);
         bench->setDither(dither);
         bench->preDraw();