Packaging: removes an unused dependency (#42071)

* Packaging: removes an unused dependency

libfontconfig1 was used by phantomjs but we aren't using phantomjs
anymore

* Packaging: removes further libfontconfig1 references

docs/sources/installation/debian.md

@@ -101,7 +101,7 @@ If you install the `.deb` package, then you will need to manually update Grafana
 1. Copy and paste the code from the installation page into your command line and run. It follows the pattern shown below.
 
 ```bash
-sudo apt-get install -y adduser libfontconfig1
+sudo apt-get install -y adduser
 wget <.deb package url>
 sudo dpkg -i grafana<edition>_<version>_amd64.deb
 ```

docs/sources/installation/upgrading.md

@@ -62,7 +62,7 @@ links.
 
 ```bash
 wget <debian package url>
-sudo apt-get install -y adduser libfontconfig1
+sudo apt-get install -y adduser
 sudo dpkg -i grafana_<version>_amd64.deb
 ```
 

packaging/conf/nfpm.yaml

@@ -11,7 +11,6 @@ provides:
 - grafana-cli
 depends:
 - adduser
-- libfontconfig1
 maintainer: "<contact@grafana.com>"
 description: |
   Grafana

scripts/build/ci-build/Dockerfile

@@ -132,7 +132,6 @@ RUN apt-get update && \
         python-pip      \
         ca-certificates \
         curl            \
-        libfontconfig1  \
         gcc             \
         g++             \
         git             \