Remove macros.systempython

It was for backward compatibility only, to be removed in F29.
This will only become non-flat package in F29+.

macros.systempython

@@ -1 +0,0 @@
-%system_python_abi %{expand: }

python37.spec

@@ -247,10 +247,6 @@ Source: https://www.python.org/ftp/python/%{version}/Python-%{version}%{prerel}.
 # Written by bkabrda
 Source8: check-pyc-and-pyo-timestamps.py
 
-# Backward compatible no-op macro for system-python
-# Remove in Fedora 29
-Source9: macros.systempython
-
 # Desktop menu entry for idle3
 Source10: idle3.desktop
 
@@ -959,12 +955,6 @@ rm -rf %{buildroot}%{_bindir}/__pycache__
 # Fixup permissions for shared libraries from non-standard 555 to standard 755:
 find %{buildroot} -perm 555 -exec chmod 755 {} \;
 
-# Install macros for rpm:
-%if %{without flatpackage}
-mkdir -p %{buildroot}/%{_rpmconfigdir}/macros.d/
-install -m 644 %{SOURCE9} %{buildroot}/%{_rpmconfigdir}/macros.d/
-%endif
-
 # Create "/usr/bin/python3-debug", a symlink to the python3 debug binary, to
 # avoid the user having to know the precise version and ABI flags.
 # See e.g. https://bugzilla.redhat.com/show_bug.cgi?id=676748
@@ -1359,7 +1349,6 @@ CheckPython optimized
 %if %{without flatpackage}
 %{_bindir}/python3-config
 %{_libdir}/pkgconfig/python3.pc
-%{_rpmconfigdir}/macros.d/macros.systempython
 %{_bindir}/pathfix.py
 %endif