Remove obsolete conditionals

ncl.spec

@@ -65,11 +65,7 @@ BuildRequires: make
 BuildRequires:  /bin/csh
 BuildRequires:  gcc-c++
 BuildRequires:  gcc-gfortran
-%if 0%{?fedora} || 0%{?rhel} >= 7
 BuildRequires:  netcdf-fortran-devel
-%else
-BuildRequires:  netcdf-devel
-%endif
 BuildRequires:  cairo-devel
 BuildRequires:  hdf-static, hdf-devel >= 4.2r2
 BuildRequires:  g2clib-static
@@ -80,9 +76,7 @@ BuildRequires:  proj-devel
 # imake needed for makedepend
 BuildRequires:  imake, libXt-devel, libXaw-devel, libXext-devel, libXpm-devel
 BuildRequires:  byacc, flex
-%if 0%{?fedora} || 0%{?rhel} >= 7
 BuildRequires:  flex-static
-%endif
 BuildRequires:  %{blaslib}-devel
 BuildRequires:  udunits2-devel
 Requires:       %{name}-common = %{version}-%{release}
@@ -104,9 +98,7 @@ example scripts and their corresponding graphics are available.
 %package common
 Summary:        Common files for NCL and NCAR Graphics
 Requires:       %{name} = %{version}-%{release}
-%if 0%{?fedora} || 0%{?rhel} > 5
 BuildArch:      noarch
-%endif
 
 %description common
 %{summary}.
@@ -127,9 +119,7 @@ Obsoletes:      ncarg-devel < %{version}-%{release}
 %package examples
 Summary:        Example programs and data using NCL
 Requires:       %{name}-devel = %{version}-%{release}
-%if 0%{?fedora} || 0%{?rhel} > 5
 BuildArch:      noarch
-%endif
 
 %description examples
 Example programs and data using NCL.