Remove launchpad-addform.pt and launchpad-editform.pt

These two templates are only used for their macros.

  lib/canonical/launchpad/templates/launchpad-addform.pt
  lib/canonical/launchpad/templates/launchpad-editform.pt

Here are the two usages of the add form:

./lib/lp/registry/templates/signedcodeofconduct-acknowledge.pt:11: <div metal:use-macro="context/@@launchpad_addform/addform"/>
./lib/lp/blueprints/templates/specification-requestfeedback.pt:23: <div metal:use-macro="context/@@launchpad_addform/addform">

Here are the two usages of the edit form:

./lib/lp/registry/templates/signedcodeofconduct-activate.pt:11: <div metal:use-macro="context/@@launchpad_editform/editform"/>
./lib/lp/registry/templates/signedcodeofconduct-deactivate.pt:11: <div metal:use-macro="context/@@launchpad_editform/editform"/>

Can the few templates that use these the launchpad_addform and launchpad_editform macros can be updated not to use them? If these macros are still necessary, the <h1> in these macros needs to be removed at the same time that the templates using them are converted to UI 3.0. Otherwise, there will be duplicate <h1> tags.