Remove redundant SV_MODE_BARE (#761)

SV_MODE_BARE is redundant with `SATP_MODE_BARE` and the latter is used
in more places, so remove the former.

Author: jordancarlin

arch/ext/S.yaml

@@ -234,11 +234,6 @@ params:
 
       # SCOUNTEN_EN can only be writable if the hpm counter exists
       SCOUNTENABLE_EN.each_with_index { |scounten, idx| next if idx < 3; assert (!scounten || HPM_COUNTER_EN[idx]) }
-  SV_MODE_BARE:
-    description: |
-      Whether or not writing mode=Bare is supported in the `satp` register.
-    schema:
-      type: boolean
   STVEC_MODE_DIRECT:
     description: |
       Whether or not `stvec.MODE` supports Direct (0).

cfgs/example_rv64_with_overlay.yaml

@@ -520,7 +520,6 @@ params:
   SV48X4_TRANSLATION: true
   SV57X4_TRANSLATION: false
   VMID_WIDTH: 8
-  SV_MODE_BARE: true
   STVEC_MODE_DIRECT: true
   STVEC_MODE_VECTORED: true
   SATP_MODE_BARE: true