pkg/serverinit: remove useless code

The bit removed is already done right before by osutil.Username(). Plus
it wasn't finished as the envVar wasn't even used in a Getenv call.

Change-Id: Ic75853ad883e7acad4347e7f2d8851dc470b5bbf

pkg/serverinit/genconfig.go

@@ -25,7 +25,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"runtime"
 	"strconv"
 	"strings"
 
@@ -103,10 +102,6 @@ func (b *lowBuilder) dbName(of string) string {
 		}
 		username := osutil.Username()
 		if username == "" {
-			envVar := "USER"
-			if runtime.GOOS == "windows" {
-				envVar += "NAME"
-			}
 			return "camlistore_index"
 		}
 		return "camli" + username