Remove command to install libhiredis deb file (sonic-net#151)

### Why I did it

libhiredis is now used as-is from the slave container, since we're not making any changes to this package. See also
sonic-net/sonic-buildimage#15633.

azure-pipelines.yml

@@ -73,7 +73,6 @@ stages:
         patterns: |
             target/debs/bullseye/libyang*.deb
             target/debs/bullseye/libnl*.deb
-            target/debs/bullseye/libhiredis*.deb
       displayName: "Download bullseye debs"
 
     - task: DownloadPipelineArtifact@2
@@ -104,13 +103,11 @@ stages:
 
     - script: |
         # LIBSWSSCOMMON
-        sudo apt-get -y purge libhiredis-dev libnl-3-dev libnl-route-3-dev
+        sudo apt-get -y purge libnl-3-dev libnl-route-3-dev
         sudo dpkg -i ../target/debs/bullseye/libnl-3-200_*.deb
         sudo dpkg -i ../target/debs/bullseye/libnl-genl-3-200_*.deb
         sudo dpkg -i ../target/debs/bullseye/libnl-route-3-200_*.deb
         sudo dpkg -i ../target/debs/bullseye/libnl-nf-3-200_*.deb
-        sudo dpkg -i ../target/debs/bullseye/libhiredis0.14_*.deb
-        sudo dpkg -i ../target/debs/bullseye/libhiredis-dev_*.deb
       displayName: "Install libswsscommon dependencies"
 
     - script: |