- fix build on old SLE*, avoid using outdated autotools

- fix rpmlint warning about installing useless INSTALL file

OBS-URL: https://build.opensuse.org/package/show/devel:tools/gengetopt?expand=0&rev=3

gengetopt.spec

@@ -43,7 +43,6 @@ and consist of only one character) can be handled.
 %setup -q
 
 %build
-autoreconf -fi
 %configure \
 	--docdir=%{_docdir}/%{name}
 make
@@ -51,6 +50,7 @@ make
 %install
 %{?make_install} %{!?make_install:make install DESTDIR=$RPM_BUILD_ROOT}
 rm -rf %{buildroot}%{_datadir}/%{name}
+rm -rf %{buildroot}%{_datadir}/%{name}/INSTALL
 
 %check
 make check