Every healthy green leaf you remove will reduce your plants capacity to make energy, slowing growth and leading to potentially smaller growth, especially if done too much/excessively.
Congratulations for letting your plant do its own thing, they must be really happy being "allowed" to grow just as mother nature intended!
One or two funny leaves won't cause any harm, plus the elements (carbs, sugars, amino acids etc) that are in the damaged leaf will eventually be re-used elsewhere in the plant. Removing this or any other healthy green leaf denies your plant of this remarkable "store" of ready made substances for use during flowering, and is one very important fact that defoliation advocates fail to understand. This is also why leaves can/will go yellow (the fade) during flowering on otherwise healthy and well fed plants. It is far more efficient for your plant to "recycle" previously made growth substances that it has "stored" in her older leaves, than it is to grow flowers AND make these growth elements from new. Try to only remove yellow leaves, for by the tie they are yellow, they have served their purpose.
Hope this helps,.........
Organoman.