channels_list: remove anchor icon

Anchor outputs are not optional, so this icon does not add meaningful
information to the user. It is only marginally useful for debuging.

electrum/gui/qt/channels_list.py

@@ -440,12 +440,6 @@ class ChanFeatNoOnchainBackup(ChannelFeature):
         return read_QIcon("cloud_no")
 
 
-class ChanFeatAnchors(ChannelFeature):
-    def tooltip(self) -> str:
-        return _("This channel uses anchor outputs.")
-    def icon(self) -> QIcon:
-        return read_QIcon("anchor")
-
 
 class ChannelFeatureIcons:
 
@@ -467,8 +461,6 @@ class ChannelFeatureIcons:
                 feats.append(ChanFeatTrampoline())
             if not chan.has_onchain_backup():
                 feats.append(ChanFeatNoOnchainBackup())
-            if chan.has_anchors():
-                feats.append(ChanFeatAnchors())
         return ChannelFeatureIcons(feats)
 
     def paint(self, painter: QPainter, rect: QRect) -> None: