[ci] remove docbook and xml dependencies

packaging/deb/freerdp-nightly/control

@@ -10,8 +10,6 @@ Build-Depends:
  cmake,
  pkg-config,
  libssl-dev,
- docbook-xsl,
- xsltproc,
  ninja-build,
  libkrb5-dev | krb5-multidev | heimdal-multidev,
  libxkbcommon-dev,
@@ -44,7 +42,6 @@ Build-Depends:
  libdbus-glib-1-dev,
  libpam0g-dev,
  uuid-dev, 
- libxml2-dev,
  libjson-c-dev | libcjson-dev,
  libsdl3-0 | libsdl2-2.0-0,
  libsdl3-dev | libsdl2-dev,