Fix all JSHint complaints in Node.js code.

lib/roles/device/resources/inputagent.js

@@ -39,8 +39,8 @@ module.exports = syrup.serial()
         .then(function(installedPath) {
           log.info('Running version check')
           return adb.shell(options.serial, util.format(
-            "export CLASSPATH='%s';"
-          + " exec app_process /system/bin '%s' --version"
+            "export CLASSPATH='%s';" +
+            " exec app_process /system/bin '%s' --version"
           , installedPath
           , resource.main
           ))
@@ -61,7 +61,7 @@ module.exports = syrup.serial()
               })
           })
         })
-        .catch(function(err) {
+        .catch(function() {
           log.info('Installing InputAgent.apk')
           return adb.install(options.serial, resource.apk)
             .then(function() {

lib/roles/device/resources/remote.js

@@ -58,7 +58,7 @@ module.exports = syrup.serial()
         .then(function(out) {
           // Can be "Text is busy", "text busy"
           return streamutil.findLine(out, (/busy/i))
-            .then(function(line) {
+            .then(function() {
               log.info('Binary is busy, will retry')
               return Promise.delay(1000)
             })