Review corrections pass #2

Add API review comments to correct documentation and endpoints.  Also, add a libpode prune method to reduce code duplication.  Only used right now for the API but when the remote client is wired, we will switch over there too.

Signed-off-by: Brent Baude <bbaude@redhat.com>

pkg/api/server/swagger.go

@@ -50,15 +50,6 @@ type swagInternalError struct {
 	}
 }
 
-// Generic error
-// swagger:response GenericError
-type swagGenericError struct {
-	// in:body
-	Body struct {
-		utils.ErrorModel
-	}
-}
-
 // Conflict error in operation
 // swagger:response ConflictError
 type swagConflictError struct {
@@ -130,21 +121,6 @@ type swagListContainers struct {
 	}
 }
 
-// To be determined
-// swagger:response tbd
-type swagTBD struct {
-}
-
-// Success
-// swagger:response
-type swag struct {
-	// in:body
-	Body struct {
-		// example: OK
-		ok string
-	}
-}
-
 // Success
 // swagger:response
 type ok struct {