encoding/gob: delete out of memory test

Now that the library allows much larger data, it can kill
machines with less memory.

Fixes #28321

Change-Id: I98e1a5fdf812fd75adfb22bf01542423de405fe2
Reviewed-on: https://go-review.googlesource.com/c/143817Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

src/encoding/gob/encoder_test.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"io/ioutil"
 	"reflect"
-	"runtime"
 	"strings"
 	"testing"
 )
@@ -1128,24 +1127,3 @@ func TestBadData(t *testing.T) {
 		}
 	}
 }
-
-// TestHugeWriteFails tests that enormous messages trigger an error.
-func TestHugeWriteFails(t *testing.T) {
-	if runtime.GOARCH == "wasm" {
-		t.Skip("out of memory on wasm")
-	}
-	if testing.Short() {
-		// Requires allocating a monster, so don't do this from all.bash.
-		t.Skip("skipping huge allocation in short mode")
-	}
-	huge := make([]byte, tooBig)
-	huge[0] = 7 // Make sure it's not all zeros.
-	buf := new(bytes.Buffer)
-	err := NewEncoder(buf).Encode(huge)
-	if err == nil {
-		t.Fatalf("expected error for huge slice")
-	}
-	if !strings.Contains(err.Error(), "message too big") {
-		t.Fatalf("expected 'too big' error; got %s\n", err.Error())
-	}
-}