do not install files that do not exist

debian/libsysstat-qt5-0-dev.install

@@ -4,7 +4,4 @@ usr/lib/*/libsysstat-qt5.so
 usr/lib/*/pkgconfig/sysstat-qt5.pc
 
 usr/share/cmake/sysstat-qt5/sysstat-qt5-config.cmake
-usr/share/cmake/sysstat-qt5/sysstat-qt5-config-version.cmake
+usr/share/cmake/sysstat-qt5/sysstat_use.cmake
-usr/share/cmake/sysstat-qt5/sysstat-qt5-targets.cmake
-usr/share/cmake/sysstat-qt5/sysstat-qt5-targets-none.cmake
-