Use %autosetup, %make_build, and %make_install macros

Using %autosetup removes the need to manually define %patchN macros.

Using %make_build and %make_install handles %{?_smp_mflags} and DESTDIR.

Also remove cruft related to the znc systemd service file install, left
after a53b3b8 ("cleanup conditionals, use upstream unit file",
2016-10-07).

znc.spec

@@ -111,7 +111,7 @@ python3 module for ZNC
 
 
 %prep
-%setup -q
+%autosetup -p1
 
 
 %build
@@ -129,13 +129,11 @@ python3 module for ZNC
      --disable-python \
 %endif # 0%{?with_modpython}
      --enable-ipv6 --enable-cyrus --enable-tcl
-%__make %{?_smp_mflags}
+%make_build
 
 
 %install
-%__make install DESTDIR="%{buildroot}"
-mkdir -p %buildroot%{_unitdir}
-#install -m 0644 %{SOURCE1} %buildroot%{_unitdir}/znc.service
+%make_install
 install -d "%{buildroot}%{_sharedstatedir}/znc"
 
 
@@ -251,6 +249,7 @@ getent passwd znc >/dev/null || \
 * Fri Aug 24 2018 Todd Zullinger <tmz@pobox.com>
 - Clean up ancient Fedora and RHEL conditionals
 - Remove cruft from %%prep
+- Use %%autosetup, %%make_build, and %%make_install macros
 
 * Mon Jul 23 2018 Nick Bebout <nb@fedoraproject.org> - 1.7.1-2
 - Add gcc-c++ and redhat-rpm-config to znc-devel's dependencies