remove unused import

Author: mawinter69

src/main/java/io/jenkins/plugins/file_parameters/StashedFileParameterValue.java

@@ -24,7 +24,6 @@
 
 package io.jenkins.plugins.file_parameters;
 
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.EnvVars;
 import hudson.Extension;
 import hudson.FilePath;