delete unnecessary lines of STDCHead (open-mmlab#1231)

Author: MengzhangLI

configs/_base_/models/stdc.py

@@ -68,7 +68,7 @@
             in_index=0,
             norm_cfg=norm_cfg,
             concat_input=False,
-            align_corners=False,
+            align_corners=True,
             loss_decode=[
                 dict(
                     type='CrossEntropyLoss',

mmseg/models/decode_heads/stdc_head.py

@@ -80,11 +80,6 @@ def losses(self, seg_logit, seg_label):
         boudary_targets_pyramid[
             boudary_targets_pyramid <= self.boundary_threshold] = 0
 
-        seg_logit = F.interpolate(
-            seg_logit,
-            boundary_targets.shape[2:],
-            mode='bilinear',
-            align_corners=True)
         loss = super(STDCHead, self).losses(seg_logit,
                                             boudary_targets_pyramid.long())
         return loss