fix UnusedMethodParameter linter issue

refs DE-643
flag = none

test-plan:
- Build passes

Change-Id: I4e00b018158c33f823bae8ebeea1f4e4c37721d3
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/264706
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: James Butters <jbutters@instructure.com>
Reviewed-by: Aaron Ogata <aogata@instructure.com>
QA-Review: Andrea Cirulli <andrea.cirulli@instructure.com>
Product-Review: Andrea Cirulli <andrea.cirulli@instructure.com>

build/new-jenkins/library/vars/distribution.groovy

@@ -31,7 +31,6 @@ import groovy.time.*
 def appendStagesAsBuildNodes(nodes,
                              stageCount,
                              stageNamePrefix,
-                             testLabel,
                              stageBlock) {
   for (int i = 0; i < stageCount; i++) {
     // make this a local variable so when the closure resolves
@@ -65,7 +64,7 @@ def unstashBuildScripts() {
 def addRSpecSuites(stages) {
   def rspecNodeTotal = rspec.rspecConfig().node_total
   echo 'adding RSpec Test Sets'
-  appendStagesAsBuildNodes(stages, rspecNodeTotal, 'RSpec Test Set', 'rspec') { index ->
+  appendStagesAsBuildNodes(stages, rspecNodeTotal, 'RSpec Test Set') { index ->
     rspec.runRSpecSuite(rspecNodeTotal, index)
   }
 }
@@ -76,7 +75,7 @@ def addRSpecSuites(stages) {
 def addSeleniumSuites(stages) {
   def seleniumNodeTotal = rspec.seleniumConfig().node_total
   echo 'adding Selenium Test Sets'
-  appendStagesAsBuildNodes(stages, seleniumNodeTotal, 'Selenium Test Set', 'selenium') { index ->
+  appendStagesAsBuildNodes(stages, seleniumNodeTotal, 'Selenium Test Set') { index ->
     rspec.runSeleniumSuite(seleniumNodeTotal, index)
   }
 }

build/new-jenkins/library/vars/rspec.groovy

@@ -178,14 +178,14 @@ def _runRspecTestSuite(
 }
 
 def uploadSeleniumCoverage() {
-  _uploadCoverage('selenium', 'canvas-lms-selenium')
+  _uploadCoverage('canvas-lms-selenium')
 }
 
 def uploadRSpecCoverage() {
-  _uploadCoverage('rspec', 'canvas-lms-rspec')
+  _uploadCoverage('canvas-lms-rspec')
 }
 
-def _uploadCoverage(prefix, coverageName) {
+def _uploadCoverage(coverageName) {
   reports.publishSpecCoverageToS3('tmp/spec_coverage/**/*', "$coverageName/coverage")
 }