win32/nsis: small misc Windows installer script cleanup

This commit does not add functional changes.
It mainly fix whitespaces and insignificantly alter behavior
when debugging.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

extras/package/win32/vlc.win32.nsi.in

@@ -40,8 +40,6 @@ SetCompressor lzma
 SetCompressor /SOLID lzma
 !endif
 
-;ShowInstDetails show
-;ShowUnInstDetails show
 SetOverwrite ifnewer
 CRCCheck on
 BrandingText "${PRODUCT_GROUP} ${PRODUCT_NAME}"