Run visual tests against Chrome and Firefox only

.gemini-chrome.yml

@@ -13,5 +13,5 @@ browsers:
   chrome:
     desiredCapabilities:
       browserName: "chrome"
-      version: "61.0"
-      platform: "Windows 10"
+      version: "66.0"
+      platform: "Windows 10"

.gemini.yml

@@ -16,40 +16,3 @@ browsers:
       version: "47.0"
       platform: "Windows 10"
 
-  ie:
-    desiredCapabilities:
-      browserName: "internet explorer"
-      version: "11.0"
-      platform: "Windows 10"
-
-  edge:
-    desiredCapabilities:
-      browserName: "microsoftedge"
-      version: "15"
-      platform: "Windows 10"
-
-  # android:
-  #   desiredCapabilities:
-  #     browserName: "chrome"
-  #     platform: "Android"
-  #
-  # The following setups don't currently work due to Selenium SafariDriver issue
-  # https://github.com/vaadin/vaadin-element-skeleton/issues/19
-  #
-  # safari:
-  #   desiredCapabilities:
-  #     browserName: "safari"
-  #     version: "10.0"
-  #     platform: "OS X 10.11"
-  #
-  # iphone:
-  #   desiredCapabilities:
-  #     browserName: "iphone"
-  #     version: "9.2"
-  #     platform: "OS X 10.11"
-  #
-  # ipad:
-  #   desiredCapabilities:
-  #     browserName: "ipad"
-  #     version: "9.2"
-  #     platform: "OS X 10.11"