Adapt to removal of pipe.base.task.Task.display().

Directly invoke utility code from afwDisplay in ANetAstrometryTask rather than
relying on the pipe_base framework.

python/lsst/meas/astrom/anetAstrometry.py

@@ -23,6 +23,7 @@
 from contextlib import contextmanager
 
 import lsst.pex.exceptions
+import lsst.afw.display as afwDisplay
 import lsst.afw.geom as afwGeom
 from lsst.afw.cameraGeom import TAN_PIXELS
 from lsst.afw.table import Point2DKey, CovarianceMatrix2fKey
@@ -343,7 +344,10 @@ def loadAndMatch(self, exposure, sourceCat, bbox=None):
                 raise RuntimeError("No astrometric matches")
             self.log.info("%d astrometric matches" %  (len(matches)))
 
-            self.display('astrometry', exposure=exposure, sources=sourceCat, matches=matches)
+            if self._display:
+                import lsstDebug
+                lsstDebug.Info(__name__).frame
+                afwDisplay.utils.drawSourceMatches(exposure, sourceCat, matches, frame)
 
             return pipeBase.Struct(
                 refCat = astrom.refCat,
@@ -385,7 +389,10 @@ def _astrometry(self, sourceCat, exposure, bbox=None):
         # Note that this is the Wcs for the provided positions, which may be distorted
         exposure.setWcs(astrom.getWcs())
 
-        self.display('astrometry', exposure=exposure, sources=sourceCat, matches=matches)
+        if self._display:
+            import lsstDebug
+            frame = lsstDebug.Info(__name__).frame
+            afwDisplay.utils.drawSourceMatches(exposure, sourceCat, matches, frame)
 
         return pipeBase.Struct(
             refCat = astrom.refCat,
@@ -463,7 +470,10 @@ def fitWcs(initialWcs, title=None):
         else:
             self.log.warn("Not calculating a SIP solution; matches may be suspect")
 
-        self.display('astrometry', exposure=exposure, sources=sourceCat, matches=matches)
+        if self._display:
+            import lsstDebug
+            frame = lsstDebug.Info(__name__).frame
+            afwDisplay.utils.drawSourceMatches(exposure, sourceCat, matches, frame)
 
         return sip