TT#134250 remove yuicompressor since is no longer provide by pip

* remove dh-systemd, no longer necessary
* add libsasl2-dev as dependency fixing pip build of python-ldap

> Modules/LDAPObject.c:16:10: fatal error: sasl/sasl.h: No such file or directory
>    16 | #include <sasl/sasl.h>
>       |          ^~~~~~~~~~~~~
> compilation terminated.
> error: command '/usr/lib/ccache/x86_64-linux-gnu-gcc' failed with exit code 1
> ----------------------------------------

Change-Id: I0c6265bfb607e77f74a85f094dd03b3017532d73

debian/control

@@ -4,9 +4,9 @@ Maintainer: Sipwise Development Team <support@sipwise.com>
 Homepage: https://www.sipwise.com/
 Build-Depends:
  debhelper-compat (= 12),
- dh-systemd (>= 1.5),
  libldap2-dev,
  libpq-dev,
+ libsasl2-dev,
  python3-dev,
  virtualenv,
 Standards-Version: 3.9.8

requirements/common.txt

@@ -21,4 +21,3 @@ python-debian
 PyYAML
 six>=1.9
 webassets
-yuicompressor