[NRL-1922] Remove unused sonarcloud url config

Author: mattdean3-nhs

.github/workflows/pr-checks.yml

@@ -62,7 +62,6 @@ jobs:
         uses: sonarsource/sonarqube-scan-action@master
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
 
       # Check the Quality Gate status.
       - name: SonarQube Quality Gate check
@@ -72,4 +71,3 @@ jobs:
           pollingTimeoutSec: 600
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }} #OPTIONAL