[berkeley] Remove test directory in kimchi/js #2084

Job	Run time
Build-And-Test-Server (Simple integration tests)	21m 40s
Build-And-Test-Server (DEX integration tests)	26m 52s
Build-And-Test-Server (DEX integration test with proofs)	27m 47s
Build-And-Test-Server (Voting integration tests)	13m 47s
Build-And-Test-Server (Unit tests)	20m 2s
Build-And-Test-Server (Verification Key Regression Check)	7m 11s
Build-And-Test-Server (CommonJS test)	3m 8s
Build-And-Test-Web	6m 40s
Release-on-NPM	1m 10s
Release-mina-signer-on-NPM	1m 18s
	2h 9m 35s

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