Soy template debug info is generated but turned off

[segabor]

Soy adds debug metadata to generated tags if debugSoyTemplateInfo is turned on.
Like:

{print 'Boo!'}<br>

is evaluated to

    output.append("Boo!<br")
    if false {
        output.append(" data-debug-soy=\"soy.examples.features.demoPrint ./examples/features.soy:96\"")
    }
    output.append(">")

Now this feature is turned off so source will be full of if false {..} lines.
Decide to eliminate debug feature entirely or keep it with better control.

[segabor]

Technical hint: affected source com.google.template.soy.shared.internal.BuiltinFunction.DEBUG_SOY_TEMPLATE_INFO