There is one way: You can remove the placeholder text from Word's XML. I have found out, that when you rename docx file to zip file and unpack to some folder, there i XML Folder\word\glossary\document.xml For each PlaceHolde there is some XML Node (<w:docPart>), where you can find this elements <w:t>[State]</w:t> When you remove "[State]" from this elements all document properties will be empty. Unfortunatelly all document properties...
<w:docPart>
<w:docPartPr>
<w:name w:val="6B065C21091C4A3EB2ED303418489498"/>
<w:category>
<w:name w:val="General"/>
<w:gallery w:val="placeholder"/>
</w:category>
<w:types>
<w:type w:val="bbPlcHdr"/>
</w:types>
<w:behaviors>
<w:behavior w:val="content"/>
</w:behaviors>
<w:guid w:val="{C72BE424-6B80-4344-9F1D-E3C0E8226E6B}"/>
</w:docPartPr>
<w:docPartBody>
<w:p w:rsidR="00967279" w:rsidRDefault="008A1C99">
<w:r w:rsidRPr="00EE3CA7">
<w:rPr>
<w:rStyle w:val="PlaceholderText"/>
</w:rPr>
<w:t>[State]</w:t>
</w:r>
</w:p>
</w:docPartBody>
</w:docPart>