Post Git switch: Update codereview.settings and remove drover.properties

The key in codereview.settings only made sense for committing to SVN.
The drover.properties is of no use, since drover doesn't support Git.

BUG=chromium:412012

Review URL: https://webrtc-codereview.appspot.com/46669004

Cr-Commit-Position: refs/heads/master@{#8847}
diff --git a/codereview.settings b/codereview.settings
index c553b48..5e5814e 100644
--- a/codereview.settings
+++ b/codereview.settings
@@ -1,7 +1,7 @@
 # This file is used by gcl to get repository specific information.
 CODE_REVIEW_SERVER: webrtc-codereview.appspot.com
 CC_LIST: webrtc-reviews@webrtc.org
-VIEW_VC: http://code.google.com/p/webrtc/source/detail?r=
+VIEW_VC: https://chromium.googlesource.com/external/webrtc/+/
 TRY_ON_UPLOAD: False
 TRYSERVER_SVN_URL: svn://svn.chromium.org/chrome-try/try-webrtc
 TRYSERVER_PROJECT: webrtc
diff --git a/drover.properties b/drover.properties
deleted file mode 100644
index 420b5f6..0000000
--- a/drover.properties
+++ /dev/null
@@ -1,6 +0,0 @@
-BASE_URL = "https://webrtc.googlecode.com/svn"
-TRUNK_URL = BASE_URL + "/trunk"
-BRANCH_URL = BASE_URL + "/branches/$branch"
-SKIP_CHECK_WORKING = True
-FILE_PATTERN = file_pattern_ =  r"[ ]+([MADUC])[ ]+/((?:trunk|branches/.*?)(.*)/(.*))"
-PROMPT_FOR_AUTHOR = False