Revert "Test issues with &await"

This reverts commit 9a9ec49.

This isn't the direction we want to go in.
Per: rakudo/rakudo@7df750a108

S17-promise/nonblocking-await.t

@@ -1,7 +1,7 @@
 use v6.d.PREVIEW;
 use Test;
 
-plan 28;
+plan 27;
 
 # Limit scheduler to just 4 real threads, so we'll clearly be needing the
 # non-blocking await support for these to pass.
@@ -271,15 +271,3 @@ PROCESS::<$SCHEDULER> := ThreadPoolScheduler.new(max_threads => 4);
     is @foo.elems, 4, "slips awaited over get flattened out";
   }
 }
-
-{ # https://github.com/rakudo/rakudo/issues/1323
-    # Await must be called in sink context here to trigger the covered bug.
-    # Gymnastics with atomic ints are just to reduce test runtime; the point
-    # of the test is that await awaits in this case for all Promises to
-    # complete instead of just returning immediately.
-    # (same test exists in 6.c tests on purpose; to cover Rakudo impl)
-    my atomicint $x;
-    sub p { start { sleep .3; $x⚛++ } }
-    await [[[p(), [p(), [p(),]]], [p(), p(), p()]], [p(), p(), p()]];
-    is-deeply $x, 9, '&await awaits when given nested containerized iterables';
-}

S17-promise/start.t

@@ -1,7 +1,7 @@
 use v6;
 use Test;
 
-plan 60;
+plan 59;
 
 throws-like { await }, Exception, "a bare await should not work";
 
@@ -248,15 +248,3 @@ lives-ok {
 	});
     nok $wrong, 'No data races on closure interpolation in strings';
 }
-
-{ # https://github.com/rakudo/rakudo/issues/1323
-    # Await must be called in sink context here to trigger the covered bug.
-    # Gymnastics with atomic ints are just to reduce test runtime; the point
-    # of the test is that await awaits in this case for all Promises to
-    # complete instead of just returning immediately.
-    # (same test exists in 6.d tests on purpose; to cover Rakudo impl)
-    my atomicint $x;
-    sub p { start { sleep .3; $x⚛++ } }
-    await [[[p(), [p(), [p(),]]], [p(), p(), p()]], [p(), p(), p()]];
-    is-deeply $x, 9, '&await awaits when given nested containerized iterables';
-}