RTFDocumentImpl::popState: drop unnecessary state copies
RTFDocumentImpl::popState: drop unnecessary state copies

First only parts of the parser state was copied, then later the whole
state, but code not using the full copy was still there. Remove it now.

Change-Id: I2c5507e74a24b8dac74552c61d69ba0be7257d6b

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core