manifest: add omni external/chromium-webview

Change-Id: Icf396dde0630d3c79346a1d59da33d7307f20ed5
diff --git a/remove.xml b/remove.xml
index 590e655..b8e9e89 100644
--- a/remove.xml
+++ b/remove.xml
@@ -55,6 +55,7 @@
 
   <remove-project name="platform/external/aac" />
   <remove-project name="platform/external/e2fsprogs" />
+  <remove-project name="platform/external/chromium-webview" />
   <remove-project name="platform/external/libnfnetlink" />
   <remove-project name="platform/external/libnetfilter_conntrack" />
   <remove-project name="platform/external/mksh" />