fix(golang): remove encoder pattern from deserialization rule (CWE-50… #1499

Job	Run time
build (javascript/express)	2m 12s
build (javascript/hapi)	14s
build (javascript/lang)	3m 21s
build (javascript/node)	13s
build (javascript/react)	24s
build (javascript/third_parties)	1m 57s
build (ruby/lang)	4m 9s
build (ruby/rails)	1m 41s
build (ruby/third_parties)	3m 25s
build (java/lang)	3m 5s
build (java/spring)	17s
build (java/android)	14s
build (java/third_parties)	30s
build (php/lang)	5m 3s
build (php/symfony)	55s
build (php/third_parties)	1m 8s
build (python/django)	57s
build (python/lang)	1m 49s
build (python/third_parties)	43s
build (go/lang)	59s
build (go/gosec)	2m 10s
build (go/gorilla)	16s
build (go/third_parties)	40s
	36m 22s

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