Add more lints: asciicheck, bidichk, spancheck (#8182)

Remove a few trivial instances of trailing whitespace.

.golangci.yml

@@ -1,6 +1,8 @@
 linters:
   disable-all: true
   enable:
+    - asciicheck
+    - bidichk
     - errcheck
     - gofmt
     - gosec
@@ -9,6 +11,7 @@ linters:
     - ineffassign
     - misspell
     - nolintlint
+    - spancheck
     - sqlclosecheck
     - typecheck
     - unconvert

bdns/dns.go

@@ -391,7 +391,6 @@ func (dnsClient *impl) exchangeOne(ctx context.Context, hostname string, qtype u
 			return
 		}
 	}
-
 }
 
 // isTLD returns a simplified view of whether something is a TLD: does it have

mocks/sa.go

@@ -220,7 +220,6 @@ func (sa *StorageAuthorityReadOnly) GetCertificateStatus(_ context.Context, req
 
 func (sa *StorageAuthorityReadOnly) SetCertificateStatusReady(ctx context.Context, req *sapb.Serial, _ ...grpc.CallOption) (*emptypb.Empty, error) {
 	return nil, status.Error(codes.Unimplemented, "unimplemented mock")
-
 }
 
 // GetRevocationStatus is a mock

test/ocsp/checkocsp/checkocsp.go

@@ -48,7 +48,6 @@ stale.
 			}
 			serialNumber := big.NewInt(0).SetBytes(bytes)
 			_, err = helper.ReqSerial(serialNumber, config)
-
 		} else {
 			_, err = helper.ReqFile(a, config)
 		}