[tracker-oci-images/sam/ubuntu-fix] ubuntu: Fix mistake introduced in the last merge

[Sam Thursfield <sthursfield src gnome org>]

commit 2c9aa162fa4eed6f70669908c8830ee945e0bb69
Author: Sam Thursfield <sam afuera me uk>
Date:   Thu Dec 10 01:56:12 2020 +0100

    ubuntu: Fix mistake introduced in the last merge
    
    There's no tracker 3 packages in Ubuntu yet.

 debian/ubuntu-rolling.Dockerfile | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/debian/ubuntu-rolling.Dockerfile b/debian/ubuntu-rolling.Dockerfile
index fcb799f..192d812 100644
--- a/debian/ubuntu-rolling.Dockerfile
+++ b/debian/ubuntu-rolling.Dockerfile
@@ -10,10 +10,9 @@ RUN export DEBIAN_FRONTEND=noninteractive && \
     apt-get -yq install libgrss-dev && \
     apt-get -yq install eatmydata
 
-RUN apt-get -yq remove libtracker-sparql-3.0-0 && \
+RUN apt-get -yq remove libtracker-sparql-2.0-0 && \
     apt-get clean && \
-    rm -rf /var/lib/apt/lists && \
-    rm -R /root/*
+    rm -rf /var/lib/apt/lists
 
 RUN useradd -Um tracker
 USER tracker