make some tests faster (#9413)

* remove duplicated slow test

* smaller `convex hull`

* smaller sleep

* faster `trtree`

* smaller sleep in `tfuturestream`

tests/collections/ttables.nim

@@ -3,10 +3,9 @@ discard """
   output: '''
 done
 And we get here
-true
-true
-true
-true
+1
+2
+3
 '''
 """
 import hashes, sequtils, tables
@@ -119,8 +118,7 @@ block thashes:
       newTable[uint32, string](),
       newTable[uint64, string](),
     )
-
-  echo "true"
+  echo "1"
 
 
 block tindexby:
@@ -188,7 +186,7 @@ block ttables2:
 
 
   run1()
-  echo "true"
+  echo "2"
 
 
 block tablesref:
@@ -355,21 +353,4 @@ block tablesref:
     assert t.len() == 0
 
   orderedTableSortTest()
-  echo "true"
-
-
-block tablesref2:
-  proc TestHashIntInt() =
-    var tab = newTable[int,int]()
-    for i in 1..1_000_000:
-      tab[i] = i
-    for i in 1..1_000_000:
-      var x = tab[i]
-      if x != i : echo "not found ", i
-
-  proc run1() =         # occupied Memory stays constant, but
-    for i in 1 .. 50:   # aborts at run: 44 on win32 with 3.2GB with out of memory
-      TestHashIntInt()
-
-  run1()
-  echo "true"
+  echo "3"