treewide: move some emulators to their correct place

bochs, dynamips, hercules, tiny8086 and tinyemu are not virtualizers.

pkgs/top-level/all-packages.nix

···
 
   boca = callPackage ../development/libraries/boca { };
 
-  bochs = callPackage ../applications/virtualization/bochs {
+  bochs = callPackage ../applications/emulators/bochs {
     wxGTK = wxGTK30;
   };
 
···
 
   tinycbor = callPackage ../development/libraries/tinycbor { };
 
-  tiny8086 = callPackage ../applications/virtualization/tiny8086 { };
+  tiny8086 = callPackage ../applications/emulators/tiny8086 { };
 
-  tinyemu = callPackage ../applications/virtualization/tinyemu { };
+  tinyemu = callPackage ../applications/emulators/tinyemu { };
 
   tinyfecvpn = callPackage ../tools/networking/tinyfecvpn { };
 
···
 
   dwm-status = callPackage ../applications/window-managers/dwm/dwm-status.nix { };
 
-  dynamips = callPackage ../applications/virtualization/dynamips { };
+  dynamips = callPackage ../applications/emulators/dynamips { };
 
   exploitdb = callPackage ../tools/security/exploitdb { };
 
···
 
   herbstluftwm = callPackage ../applications/window-managers/herbstluftwm { };
 
-  hercules = callPackage ../applications/virtualization/hercules { };
+  hercules = callPackage ../applications/emulators/hercules { };
 
   hexchat = callPackage ../applications/networking/irc/hexchat { };