Remove BuildRoot definition

None of currently supported distributions need that.
It was needed last for EL5 which is EOL now

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

inotify-tools.spec

@@ -7,7 +7,6 @@ Group:          Applications/System
 License:        GPLv2
 URL:		 http://inotify-tools.sourceforge.net/
 Source0:        http://download.sf.net/inotify-tools/inotify-tools-%{version}.tar.gz
-BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  autoconf
 BuildRequires:  doxygen