Remove controller component from Fission (#2850)

* Remove controller component from Fission
* Cleanup at few more places

---------

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

go.mod

@@ -10,12 +10,9 @@ require (
 	github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815
 	github.com/dustin/go-humanize v1.0.1
 	github.com/elastic/crd-ref-docs v0.0.9
-	github.com/emicklei/go-restful-openapi/v2 v2.9.1
-	github.com/emicklei/go-restful/v3 v3.11.0
 	github.com/fatih/color v1.15.0
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/go-git/go-git/v5 v5.9.0
-	github.com/go-openapi/spec v0.20.9
 	github.com/golang-jwt/jwt/v4 v4.5.0
 	github.com/google/go-cmp v0.6.0
 	github.com/gorilla/mux v1.8.0
@@ -83,6 +80,7 @@ require (
 	github.com/eapache/go-resiliency v1.4.0 // indirect
 	github.com/eapache/go-xerial-snappy v0.0.0-20230731223053-c322873962e3 // indirect
 	github.com/eapache/queue v1.1.0 // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
 	github.com/evanphx/json-patch v5.6.0+incompatible // indirect
 	github.com/evanphx/json-patch/v5 v5.6.0 // indirect