remove reference to "etch" (the sentence already mentions "older packages" so it's outdated and unneeded

CVS version numbers

english/international/l10n/ddtp.wml: 1.25 -> 1.26 
french/international/l10n/ddtp.wml: 1.15 -> 1.16 
german/international/l10n/ddtp.wml: 1.25 -> 1.26 
japanese/international/l10n/ddtp.wml: 1.13 -> 1.14 
russian/international/l10n/ddtp.wml: 1.20 -> 1.21 
spanish/international/l10n/ddtp.wml: 1.10 -> 1.11 
ukrainian/international/l10n/ddtp.wml: 1.8 -> 1.9