Remove stdout printing from test

Change-Id: Ib5083da6d0545d6dc7fc7dd50d889d9c73fd57f4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/53200
Auto-Submit: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
diff --git a/src/writer/spirv/builder_intrinsic_test.cc b/src/writer/spirv/builder_intrinsic_test.cc
index 0435128..d030067 100644
--- a/src/writer/spirv/builder_intrinsic_test.cc
+++ b/src/writer/spirv/builder_intrinsic_test.cc
@@ -242,7 +242,6 @@
 
   EXPECT_EQ(b.GenerateCallExpression(expr), 10u) << b.error();
   auto got = DumpBuilder(b);
-  std::cout << got << std::endl;
   EXPECT_EQ(got, R"(%14 = OpExtInstImport "GLSL.std.450"
 OpName %1 "v"
 OpName %8 "a_func"