cleanup old allany.nim example

examples/allany.nim

@@ -1,22 +1,20 @@
 # All and any
 
 template all(container, cond: untyped): bool =
-  block:
-    var result = true
-    for it in items(container):
-      if not cond(it):
-        result = false
-        break
-    result
+  var result = true
+  for it in items(container):
+    if not cond(it):
+      result = false
+      break
+  result
 
 template any(container, cond: untyped): bool =
-  block:
-    var result = false
-    for it in items(container):
-      if cond(it):
-        result = true
-        break
-    result
+  var result = false
+  for it in items(container):
+    if cond(it):
+      result = true
+      break
+  result
 
 if all("mystring", {'a'..'z'}.contains) and any("myohmy", 'y'.`==`):
   echo "works"