remove xlibre-xserver-21 repo (was created with the wrong name)

Dockerfile

@@ -56,7 +56,6 @@ RUN dnf install -y https://github.com/Alex313031/thorium/releases/download/M138.
 
 RUN dnf copr enable yselkowitz/xfce-epel -y
 RUN dnf copr enable andersrh/xlibre-xserver -y
-RUN dnf copr enable andersrh/xlibre-xserver-21 -y
 
 RUN dnf install xlibre-xserver-Xorg xlibre-xserver-devel meson gcc cmake libX11-devel libXext-devel libXft-devel libXinerama-devel xorg-x11-proto-devel libxshmfence-devel libxkbfile-devel libbsd-devel libXfont2-devel xkbcomp libfontenc-devel libXres-devel libXdmcp-devel dbus-devel systemd-devel libudev-devel libxcvt-devel libdrm-devel libXv-devel libseat-devel libXv-devel xkbcomp xkeyboard-config-devel mesa-libGL-devel mesa-libEGL-devel libepoxy-devel mesa-libgbm-devel libdrm-devel xcb-util-devel  xcb-util-image-devel  xcb-util-keysyms-devel  xcb-util-wm-devel  xcb-util-renderutil-devel openssl-devel libXau-devel libXdmcp-devel libSM-devel libICE-devel startup-notification-devel libgtop2-devel libepoxy-devel libgudev-devel libwnck3-devel.x86_64 libdisplay-info-devel.x86_64 libnotify-devel.x86_64 upower-devel.x86_64 iceauth libICE-devel libSM-devel libXpresent-devel libyaml-devel vte291-devel gtk3-devel xorg-x11-xinit xlibre-xf86-input-libinput-devel xlibre-xf86-input-libinput -y