Drop old linter setting (GRPC's reflection) (#3769)

.golangci.yml

@@ -32,12 +32,9 @@ issues:
    - path: js\/modules\/k6\/http\/.*_test\.go
      linters:
        # k6/http module's tests are quite complex because they often have several nested levels.
-       # The module is in maintainance mode, so we don't intend to port the tests to a parallel version.
+       # The module is in maintenance mode, so we don't intend to port the tests to a parallel version.
        - paralleltest
        - tparallel
-   - linters:
-     - staticcheck # Tracked in https://github.com/grafana/xk6-grpc/issues/14
-     text: "The entire proto file grpc/reflection/v1alpha/reflection.proto is marked as deprecated."
    - linters:
      - forbidigo
      text: 'use of `os\.(SyscallError|Signal|Interrupt)` forbidden'