Fix the "Upload firmware" button

The "Upload firmware" button was not calling the uploadImage()
function in api-utils.js.
The uploadImage() function was not making the correct call to
the /upload/image REST API.
Removed the confirmUpload function since not needed on a
upload since the user has already selected the file they
want to upload, pressed "Open", and then pressed the
"Upload firmware" button.

Resolves openbmc/openbmc#2770

Tested: Uploaded several images to a Witherspoon system.
Change-Id: Ia0e0ffba501066f59a4355b8f61595e30aea3f98
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/app/common/services/api-utils.js b/app/common/services/api-utils.js
index 4d8b12c..dc6de50 100644
--- a/app/common/services/api-utils.js
+++ b/app/common/services/api-utils.js
@@ -762,7 +762,7 @@
                 $http({
                   method: 'POST',
                   timeout: 5 * 60 * 1000,
-                  url: DataService.getHost() + "/upload/image/",
+                  url: DataService.getHost() + "/upload/image",
                   headers: {
                     'Content-Type': 'application/octet-stream'
                   },