[berkeley] Remove test directory in kimchi/js #2083

Job	Run time
Build-And-Test-Web	5m 57s
Build-And-Test-Server (Simple integration tests)	28m 41s
Build-And-Test-Server (DEX integration tests)	30m 49s
Build-And-Test-Server (DEX integration test with proofs)	27m 45s
Build-And-Test-Server (Voting integration tests)	12m 5s
Build-And-Test-Server (Unit tests)	20m 16s
Build-And-Test-Server (Verification Key Regression Check)	8m 36s
Build-And-Test-Server (CommonJS test)	3m 47s
Release-on-NPM	57s
Release-mina-signer-on-NPM	1m 2s
	2h 19m 55s

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