Remove the Login Status API spec from the FedCM repo, now that it moved

spec/Makefile

@@ -2,24 +2,16 @@
 
 all: spec idl
 
-spec: index.html login-status.html
+spec: index.html
 
-idl: fedcm.idl login-status.idl
+idl: fedcm.idl
 
 fedcm.idl: index.bs
 	./extract_idl.rb fedcm.idl
 
-login-status.idl: login-status.bs
-	./extract_idl.rb login-status.idl
-
 index.html: index.bs
 	bikeshed --die-on=fatal spec index.bs
 
-login-status.html: login-status.bs
-	bikeshed --die-on=fatal spec login-status.bs
-
 clean:
 	rm index.html
 	rm fedcm.idl
-	rm login-status.html
-	rm login-status.idl

spec/index.bs

@@ -46,7 +46,7 @@ spec: webdriver; urlPrefix: https://w3c.github.io/webdriver/
 spec: webappsec-fetch-metadata; urlPrefix: https://w3c.github.io/webappsec-fetch-metadata/
     type: dfn
         text: Directly User-Initiated Requests; url: directly-user-initiated
-spec: login-status; urlPrefix: login-status.html
+spec: login-status; urlPrefix: https://w3c-fedid.github.io/login-status
     type: dfn
         text: logged-in; url: logged-in
         text: logged-out; url: logged-out