on the product insert page, find the following code:
$CKEditor_initialValue = "<p>The long description should be used to detail all the aspects of this product. This could include the following:</p><ul><li>Technical Specifications</li><li>Instructions</li><li>Product Reviews</li><li>Image gallery of the product (select the 'Insert Photo Gallery' button from the toolbar)</li></ul>";
and change it to:
$CKEditor_initialValue = "";
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