Remove note warning authors to not use values "that are going to undergo automatic conversion"

... for decimals etc. This is the same in plain old JSON. It is definitely a helpful warning but I don't think it's the specs job to warn developers about such things.

/cc @dlongley

This addresses #234.

Author: lanthaler

spec/latest/json-ld-api/index.html

@@ -3555,11 +3555,6 @@ <h2>Data Round Tripping</h2>
     -->
     </pre>
 
-    <p class="note">When data such as decimals need to be normalized, JSON-LD authors should
-      not use values that are going to undergo automatic conversion. This is due to the lossy nature
-      of <code>xsd:double</code> values. Authors should instead use the expanded object form to
-      set the canonical lexical form directly.</p>
-
     <p>The canonical lexical form of the <em>boolean</em> values <tref>true</tref> and <tref>false</tref>
       are the strings <code>true</code> and <code>false</code>.</p>