Style bikeshed - remove extraneous whitespace

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1842753002

Review URL: https://codereview.chromium.org/1842753002
diff --git a/src/gpu/vk/GrVkSampler.cpp b/src/gpu/vk/GrVkSampler.cpp
index 9938340..fb8daca 100644
--- a/src/gpu/vk/GrVkSampler.cpp
+++ b/src/gpu/vk/GrVkSampler.cpp
@@ -74,7 +74,7 @@
 uint8_t GrVkSampler::GenerateKey(const GrTextureParams& params) {
 
     uint8_t key = params.filterMode();
-    
+
     SkASSERT(params.filterMode() <= 3);
     key |= (params.getTileModeX() << 2);
 
@@ -83,4 +83,3 @@
 
     return key;
 }
-