Remove deprecated property use

Author: IRus

src/main/groovy/net/researchgate/release/ReleasePlugin.groovy

@@ -104,7 +104,6 @@ class ReleasePlugin extends PluginHelper implements Plugin<Project> {
             startParameter.projectProperties.putAll(project.getGradle().startParameter.projectProperties)
             startParameter.projectProperties.put('release.releasing', "true")
             startParameter.projectDir = project.projectDir
-            startParameter.settingsFile = project.getGradle().startParameter.settingsFile
             startParameter.gradleUserHomeDir = project.getGradle().startParameter.gradleUserHomeDir
             buildName = project.name