Removed manually installation govulncheck in Makefile

[Spuxy]

Hello, i have changed workflow (more specifically action) to use official govulncheck and replaced this solution in Makefile to simplify that.

Motivation:
Better and more convenience way to maintain runners.

$ make all
[lint] golangci-lint: .
[lint] golangci-lint: ./exp
[lint] golangci-lint: ./benchmarks
[lint] golangci-lint: ./zapgrpc/internal/test
[lint] tidy: .
[lint] tidy: ./exp
[lint] tidy: ./benchmarks
[lint] tidy: ./zapgrpc/internal/test
./checklicense.sh
?   	go.uber.org/zap/internal	[no test files]
?   	go.uber.org/zap/internal/bufferpool	[no test files]
ok  	go.uber.org/zap	(cached)
ok  	go.uber.org/zap/buffer	(cached)
ok  	go.uber.org/zap/internal/color	(cached)
?   	go.uber.org/zap/internal/readme	[no test files]
ok  	go.uber.org/zap/internal/exit	(cached)
ok  	go.uber.org/zap/internal/pool	(cached)
ok  	go.uber.org/zap/internal/stacktrace	(cached)
ok  	go.uber.org/zap/internal/ztest	(cached)
ok  	go.uber.org/zap/zapcore	(cached)
ok  	go.uber.org/zap/zapgrpc	(cached)
ok  	go.uber.org/zap/zapio	(cached)
ok  	go.uber.org/zap/zaptest	(cached)
ok  	go.uber.org/zap/zaptest/observer	(cached)
ok  	go.uber.org/zap/exp/zapfield	(cached)
ok  	go.uber.org/zap/exp/zapslog	(cached)
ok  	go.uber.org/zap/benchmarks	(cached) [no tests to run]
ok  	go.uber.org/zap/zapgrpc/internal/test	(cached)

$ make vulncheck
govulncheck ./...
No vulnerabilities found.

[CLAassistant]

All committers have signed the CLA.

[Spuxy]

The problem is, that i removed the option, that will check if the binary is installed locally (the binary should be fine in runner). On the other hand, golangci-lint doesnt care as well if there is binary at local machine.

[abhinav]

Reasonable. This matches what we're doing with golangci-lint.
Would you mind also dropping it from the tools/tools.go and run go mod tidy in that directory?

We can separately add an entry to the contribution guide that these tools must be installed for local development.

[abhinav]

CC @r-hang @JacobOaks to opine on this as the owners as well