SD_ProtocolData.pm: fixes #106

[sidey79]

removed zero key from protocol 76 to avoid perl warning fixes: #156

• Please check if the PR fulfills these requirements

• Tests for the changes have been added / modified (needed for for bug fixes / features)
• commandref has been added / updated (needed for bug fixes / features)
• CHANGED has been updated (needed for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

remove key zero which has no value under protocol 76

• What is the current behavior? (You can also link to an open issue here)

key zero has an empty list

• What is the new behavior (if this is a feature change)?

key does not exists anymore

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

no

• Other information:
  fixes PERL WARNING - Sammlung | dev Version #156