Removing bad linefeed in pretty statistics dump. (#8465)

iree/compiler/Dialect/Stream/Transforms/DumpStatistics.cpp

diff --git a/iree/compiler/Dialect/Stream/Transforms/DumpStatistics.cpp b/iree/compiler/Dialect/Stream/Transforms/DumpStatistics.cpp
index 4b8fdae..10e4acc 100644
--- a/iree/compiler/Dialect/Stream/Transforms/DumpStatistics.cpp
+++ b/iree/compiler/Dialect/Stream/Transforms/DumpStatistics.cpp
@@ -314,7 +314,7 @@
       os);
   os << "// ";
   prettyPrintOpBreadcrumb(funcOp, os);
-  os << "//\n";
+  os << "\n";
   os << "//\n";
 
   // TODO(benvanik): interface and usage stats: