Change new Uri(query:"") to not add a query part.

tests/co19/co19-co19.status

Index: tests/co19/co19-co19.status
diff --git a/tests/co19/co19-co19.status b/tests/co19/co19-co19.status
index 2d0f274044bf3795dc4c445fd09a3807421290ed..aa8bb86714187820687e355bdcf6679d6e6e7590 100644
--- a/tests/co19/co19-co19.status
+++ b/tests/co19/co19-co19.status
@@ -18,9 +18,6 @@ LibTest/typed_data/ByteData/buffer_A01_t01: Fail # co19 r736 bug - sent comment.
 
 Language/07_Classes/6_Constructors/1_Generative_Constructors_A01_t06: Fail, Pass, OK # co19 issue 695
 
-LibTest/core/Uri/authority_A01_t01: RuntimeError     # co19 issue 696
-LibTest/core/Uri/hasAuthority_A01_t01: RuntimeError  # co19 issue 696
-
 # These tests are obsolete and need updating.
 WebPlatformTest/shadow-dom/elements-and-dom-objects/shadowroot-object/shadowroot-attributes/test-002_t01: Skip # Issue 19019
 WebPlatformTest/shadow-dom/elements-and-dom-objects/shadowroot-object/shadowroot-attributes/test-003_t01: Skip # Issue 19019
@@ -28,6 +25,9 @@ WebPlatformTest/shadow-dom/elements-and-dom-objects/shadowroot-object/shadowroot
 [ $compiler != dartanalyzer && $compiler != dart2analyzer ]
 # Tests that fail on every runtime, but not on the analyzer.
 
+LibTest/core/Uri/authority_A01_t01: RuntimeError     # co19 issue 696
+LibTest/core/Uri/hasAuthority_A01_t01: RuntimeError  # co19 issue 696
+
 LibTest/core/Uri/fragment_A01_t01: Fail # assumes space valid in fragment.
 
 LibTest/isolate/ReceivePort/asBroadcastStream_A02_t01: Fail # co19 issue 687