Removes support for Tomcat 7

Apache announce that "support for Apache Tomcat 7.0.x will end on 31 March 2021".
See https://tomcat.apache.org/tomcat-70-eol.html.

Signed-off-by: Emily Casey <[email protected]>

.github/pipeline-descriptor.yml

@@ -17,12 +17,6 @@ docker_credentials:
   password: ${{ secrets.JAVA_GCLOUD_SERVICE_ACCOUNT_KEY }}
 
 dependencies:
-- name:            Tomcat 7
-  id:              tomcat
-  version_pattern: "7\\.[\\d]+\\.[\\d]+"
-  uses:            docker://ghcr.io/paketo-buildpacks/actions/tomcat-dependency:main
-  with:
-    uri: https://archive.apache.org/dist/tomcat/tomcat-7
 - name:            Tomcat 8
   id:              tomcat
   version_pattern: "8\\.[\\d]+\\.[\\d]+"

buildpack.toml

@@ -69,18 +69,6 @@ description = "the Tomcat version"
 default     = "9.*"
 build       = true
 
-[[metadata.dependencies]]
-id      = "tomcat"
-name    = "Apache Tomcat"
-version = "7.0.109"
-uri     = "https://archive.apache.org/dist/tomcat/tomcat-7/v7.0.109/bin/apache-tomcat-7.0.109.tar.gz"
-sha256  = "ebfeb051e6da24bce583a4105439bfdafefdc7c5bdd642db2ab07e056211cb31"
-stacks  = [ "io.buildpacks.stacks.bionic", "org.cloudfoundry.stacks.cflinuxfs3" ]
-
-  [[metadata.dependencies.licenses]]
-  type = "Apache-2.0"
-  uri  = "https://www.apache.org/licenses/"
-
 [[metadata.dependencies]]
 id      = "tomcat"
 name    = "Apache Tomcat"