bluetooth: Remove dead code

https://bugzilla.gnome.org/show_bug.cgi?id=708286
bluetooth: Remove unused toplevel window from .ui file

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Remove a duplicate widget instance

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Don't leak the calibrate dialog

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Don't leak the calibrate builder instance

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Remove unused toplevel window from .ui file

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Remove an unused dialog

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Don't leak the calibration assistant dialog

https://bugzilla.gnome.org/show_bug.cgi?id=708286
color: Don't leak the assign dialog

https://bugzilla.gnome.org/show_bug.cgi?id=708286
datetime: Don't leak the dialogs

https://bugzilla.gnome.org/show_bug.cgi?id=708286
datetime: Remove unused toplevel window from .ui file

https://bugzilla.gnome.org/show_bug.cgi?id=708286
display: Remove no longer used .ui file

https://bugzilla.gnome.org/show_bug.cgi?id=708286
info: Don't leak a dialog

https://bugzilla.gnome.org/show_bug.cgi?id=708286
info: Remove unused toplevel window from .ui file

https://bugzilla.gnome.org/show_bug.cgi?id=708286
keyboard: Remove unused toplevel window from .ui file

https://bugzilla.gnome.org/show_bug.cgi?id=708286
keyboard: Don't leak a dialog

https://bugzilla.gnome.org/show_bug.cgi?id=708286
mouse: Remove unused variable

https://bugzilla.gnome.org/show_bug.cgi?id=708286
mouse: Remove unused toplevel windows from .ui files

https://bugzilla.gnome.org/show_bug.cgi?id=708286
network: Remove unused toplevel windows from .ui files

https://bugzilla.gnome.org/show_bug.cgi?id=708286
network: Don't leak a couple of dialogs

https://bugzilla.gnome.org/show_bug.cgi?id=708286