chore: remove duplicate apt dependencies from Dockerfile (#32982)

The following dependencies were duplicated in the same command:
 - libxml2-dev
 - libxmlsec1-dev
 - libxslt1-dev

This contribution is part of the [FC-0012 project](https://openedx.atlassian.net/l/cp/XGS0iCcQ) which is sparked by the [Translation Infrastructure update OEP-58](https://open-edx-proposals.readthedocs.io/en/latest/architectural-decisions/oep-0058-arch-translations-management.html#specification).

Dockerfile

@@ -91,9 +91,6 @@ RUN apt-get update && \
     apt-get -y install --no-install-recommends \
         curl \
         libssl-dev \
-        libxml2-dev \
-        libxmlsec1-dev \
-        libxslt1-dev \
         libffi-dev \
         libfreetype6-dev \
         libgeos-dev \