fix(ios): remove WKWebView check (#207)

this is always true with cordova-ios >=6
diff --git a/lib/ParamedicSauceLabs.js b/lib/ParamedicSauceLabs.js
index 1c29f19..0f48540 100644
--- a/lib/ParamedicSauceLabs.js
+++ b/lib/ParamedicSauceLabs.js
@@ -440,16 +440,7 @@
                     .then((webview) => driver.context(webview));
             })
             .then(() => {
-                let isWkWebview = false;
-                const plugins = this.config.getPlugins();
-
-                for (let plugin in plugins) {
-                    if (plugins[plugin].indexOf('wkwebview') >= 0) {
-                        isWkWebview = true;
-                    }
-                }
-
-                if (isWkWebview) {
+                if (this.isIos) {
                     logger.normal('cordova-paramedic: navigating to a test page');
                     return driver
                         .sleep(1000)