Remove DEVEL conditional define

I find no reason to turn off devel package creation. It can be ignored
if required, but is mandatory due to Fedora packaging guidelines.
Simplify it a bit.

bind.spec

@@ -15,7 +15,6 @@
 # it is not possible to build the package without PKCS11 sub-package
 # due to extensive changes to Makefiles
 %bcond_without PKCS11
-%bcond_without DEVEL
 %bcond_without JSON
 %bcond_without DLZ
 %bcond_with    BDB
@@ -377,7 +376,6 @@ revocation and verification of keys and DNSSEC signatures in zone files.
 You should install bind-dnssec-utils if you need to sign a DNS zone
 or maintain keys for it.
 
-%if %{with DEVEL}
 %package devel
 Summary:  Header files and libraries needed for BIND DNS development
 Obsoletes:bind-libbind-devel < 31:9.3.3-4.fc7
@@ -388,7 +386,6 @@ Requires: bind-lite-devel%{?_isa} = %{epoch}:%{version}-%{release}
 %description devel
 The bind-devel package contains full version of the header files and libraries
 required for development with ISC BIND 9
-%endif
 
 %package lite-devel
 Summary:  Lite version of header files and libraries needed for BIND DNS development
@@ -1062,14 +1059,6 @@ popd
 # Remove libtool .la files:
 find ${RPM_BUILD_ROOT}/%{_libdir} -name '*.la' -exec '/bin/rm' '-f' '{}' ';';
 
-# Remove -devel files out of buildroot if not needed
-%if !%{with DEVEL}
-rm -f ${RPM_BUILD_ROOT}/%{_libdir}/bind9/*so
-rm -rf ${RPM_BUILD_ROOT}/%{_includedir}/bind9
-rm -f ${RPM_BUILD_ROOT}/%{_mandir}/man1/isc-config.sh.1*
-rm -f ${RPM_BUILD_ROOT}/%{_mandir}/man3/lwres*
-rm -f ${RPM_BUILD_ROOT}/%{_bindir}/isc-config.sh
-%endif
 
 # SDB manpages
 %if %{with SDB}
@@ -1432,7 +1421,6 @@ fi;
 %exclude %{_mandir}/man8/dnssec*-pkcs11.8*
 %endif
 
-%if %{with DEVEL}
 %files devel
 %{_libdir}/libbind9.so
 %{_libdir}/libisccc.so
@@ -1446,7 +1434,6 @@ fi;
 %{_mandir}/man3/lwres*
 %{_bindir}/isc-config.sh
 %{_bindir}/bind9-config
-%endif
 
 %files lite-devel
 %{_libdir}/libdns.so