Remove gRPC #4825

Job	Run time
Deduce required tests from code changes	3s
version	8s
fuzz sterile	17m 40s
debug sterile	18m 48s
release sterile	22m 50s
debug	12m 53s
v-gw-iso-l2vni / run	26m 43s
v-gw-iso-l3vni / run	26m 5s
v-up25.05-gw-iso-l2vni / run	43m 17s
h-gw-iso-l2vni / run	0s
Summary	2s
publish	0s
	2h 48m 29s

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