Fix a few deprecation warnings

tests/manyloc/keineschweine/server/old_server_utils.nim

@@ -1,5 +1,5 @@
 import
-  streams, md5, sockets, unsigned,
+  streams, md5, sockets,
   sg_packets, zlib_helpers, idgen
 type
   TClientType* = enum

tests/manyloc/keineschweine/server/old_sg_server.nim

@@ -1,5 +1,5 @@
 import
-  sockets, times, streams, streams_enh, tables, json, os, unsigned,
+  sockets, times, streams, streams_enh, tables, json, os,
   sg_packets, sg_assets, md5, server_utils, client_helpers
 var
   dirServer: PServer

tests/manyloc/named_argument_bug/tri_engine/gfx/color.nim

@@ -8,10 +8,6 @@ from strutils import
   `%`,
   ffDecimal
 
-from unsigned import
-  `shr`,
-  `and`
-
 type
   TColor* = tuple[r, g, b, a: TR]