SWDEV-489617 - Enable Unit_hipMemcpyAsync_Positive_Synchronization_Behavior

- Since any-host-to-any-host as always synchronous, there's no need for
separate functions
 - Removed 'return' statement as it skips the rest of the test.

Change-Id: If70e0b21ad8151311d5ac7c5de789f6265cf44b6

catch/unit/memory/hipMemcpyWithStream.cc

@@ -65,8 +65,6 @@ TEST_CASE("Unit_hipMemcpy_Positive_Synchronization_Behavior") {
   // respect to the host
   SECTION("Host memory to host memory") {
     MemcpyHtoHSyncBehavior(std::bind(hipMemcpy, _1, _2, _3, hipMemcpyHostToHost), true);
-    MemcpyHPinnedtoHPinnedSyncBehavior(
-        std::bind(hipMemcpyAsync, _1, _2, _3, hipMemcpyHostToHost, nullptr), true);
   }
 }