remove SOLVER.STEPS from configs

Summary:
the LR scheduler is cosine, so this config has no effect.
Remove it to avoid confusion.

Reviewed By: sstsai-adl

Differential Revision: D31444047

fbshipit-source-id: b40e0d7d923c3b55dfe23353050ea0238b3afd16

configs/faster_rcnn_fbnetv3a_C4.yaml

@@ -40,7 +40,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 540000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST:

configs/faster_rcnn_fbnetv3a_dsmask_C4.yaml

@@ -40,7 +40,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 540000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST:

configs/faster_rcnn_fbnetv3g_fpn.yaml

@@ -47,7 +47,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 450000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST:

configs/keypoint_rcnn_fbnetv3a_dsmask_C4.yaml

@@ -56,7 +56,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 450000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST:

configs/mask_rcnn_fbnetv3a_C4.yaml

@@ -40,7 +40,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 540000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST:

configs/mask_rcnn_fbnetv3a_dsmask_C4.yaml

@@ -40,7 +40,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 540000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST:

configs/mask_rcnn_fbnetv3g_fpn.yaml

@@ -47,7 +47,6 @@ DATASETS:
 SOLVER:
   IMS_PER_BATCH: 32
   BASE_LR: 0.16
-  STEPS: (60000, 80000)
   MAX_ITER: 450000
   LR_SCHEDULER_NAME: WarmupCosineLR
 TEST: