rpc: strip go_client from global vars

Commit a5ea50e7 ("go/rpc: Integration of Go client as shared library
with rpc.py") added a --go-client option, but didn't add it to the
stripped globals array, which means that it'd always be part of
parameters for RPCs that use **kwargs, e.g.:

$ scripts/rpc.py --dry-run nvmf_create_transport -t tcp
Request:
{
  "method": "nvmf_create_transport",
  "params": {
    "go_client": false,
    "trtype": "tcp",
    "zcopy": false,
    "no_srq": false,
    "c2h_success": true,
    "dif_insert_or_strip": false,
    "no_wr_batching": false,
    "disable_mappable_bar0": false,
    "disable_adaptive_irq": false,
    "disable_shadow_doorbells": false
  }
}

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I7d1cb5d4509d8360f155df27c01d862591ab248e
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/21062


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <jim.harris@samsung.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>