Remove deprecated Fission Nats connector (#2403)

We are removing Fission deprecated Nats connector and
planning to adopt Keda going forward to have better
delegated functionality and more rich support.

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

go.mod

@@ -24,9 +24,6 @@ require (
 	github.com/influxdata/influxdb v1.9.6
 	github.com/mholt/archiver/v3 v3.5.1
 	github.com/minio/minio-go v6.0.14+incompatible
-	github.com/nats-io/nats-streaming-server v0.24.3
-	github.com/nats-io/nats.go v1.13.1-0.20220308171302-2f2f6968e98d
-	github.com/nats-io/stan.go v0.10.2
 	github.com/ory/dockertest v3.3.5+incompatible
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.12.1
@@ -76,7 +73,6 @@ require (
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
 	github.com/acomagu/bufpipe v1.0.3 // indirect
 	github.com/andybalholm/brotli v1.0.1 // indirect
-	github.com/armon/go-metrics v0.3.10 // indirect
 	github.com/aws/aws-sdk-go v1.42.34 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/blend/go-sdk v1.20220212.5 // indirect
@@ -117,9 +113,7 @@ require (
 	github.com/gotestyourself/gotestyourself v2.2.0+incompatible // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
 	github.com/hashicorp/errwrap v1.0.0 // indirect
-	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
 	github.com/hashicorp/go-uuid v1.0.2 // indirect
-	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/jcmturner/aescts/v2 v2.0.0 // indirect
@@ -133,6 +127,7 @@ require (
 	github.com/kevinburke/ssh_config v0.0.0-20201106050909-4977a11b4351 // indirect
 	github.com/klauspost/compress v1.14.4 // indirect
 	github.com/klauspost/pgzip v1.2.5 // indirect
+	github.com/lib/pq v1.10.4 // indirect
 	github.com/mailru/easyjson v0.7.6 // indirect
 	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
@@ -141,8 +136,6 @@ require (
 	github.com/moby/spdystream v0.2.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/nats-io/nkeys v0.3.0 // indirect
-	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/nwaples/rardecode v1.1.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect