Simplify common case of linear filtering with no mips

Change-Id: I08b4a7bc088705b93a0aa680f6733d09c7ad23dd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354221
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/samplecode/SampleCamera.cpp b/samplecode/SampleCamera.cpp
index c9bb1c9..abde083 100644
--- a/samplecode/SampleCamera.cpp
+++ b/samplecode/SampleCamera.cpp
@@ -38,8 +38,7 @@
                 SkRect dst = { -150, -150, 150, 150 };
                 SkMatrix matrix;
                 matrix.setRectToRect(src, dst, SkMatrix::kFill_ScaleToFit);
-                fShaders.push_back(bm.makeShader(SkSamplingOptions(SkFilterMode::kLinear,
-                                                                   SkMipmapMode::kNone),
+                fShaders.push_back(bm.makeShader(SkSamplingOptions(SkFilterMode::kLinear),
                                                  matrix));
             }
         }