Remove PM_TRANS_EVT_EXTRACT_START.

This event was unused, was missing the equivalent EXTRACT_DONE event, and
was useless because we already have ADD / UPGRADE START and DONE events.

Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/add.c

@@ -806,7 +806,6 @@ static int commit_single_pkg(pmpkg_t *newpkg, int pkg_current, int pkg_count,
 		PROGRESS(trans, PM_TRANS_PROGRESS_ADD_START,
 				alpm_pkg_get_name(newpkg), 100, pkg_count, pkg_current);
 	}
-	EVENT(trans, PM_TRANS_EVT_EXTRACT_DONE, NULL, NULL);
 
 	/* run the post-install script if it exists  */
 	if(alpm_pkg_has_scriptlet(newpkg)

lib/libalpm/alpm.h

@@ -334,8 +334,6 @@ typedef enum _pmtransevt_t {
 	 * to the callback, respectively.
 	 */
 	PM_TRANS_EVT_UPGRADE_DONE,
-	/** Package was extracted. */
-	PM_TRANS_EVT_EXTRACT_DONE,
 	/** Target package's integrity will be checked. */
 	PM_TRANS_EVT_INTEGRITY_START,
 	/** Target package's integrity was checked. */

src/pacman/callback.c

@@ -226,7 +226,6 @@ void cb_trans_evt(pmtransevt_t event, void *data1, void *data2)
 			break;
 		/* all the simple done events, with fallthrough for each */
 		case PM_TRANS_EVT_FILECONFLICTS_DONE:
-		case PM_TRANS_EVT_EXTRACT_DONE:
 		case PM_TRANS_EVT_CHECKDEPS_DONE:
 		case PM_TRANS_EVT_RESOLVEDEPS_DONE:
 		case PM_TRANS_EVT_INTERCONFLICTS_DONE: