bsp/stm32h7: Remove duplicated build definitions

The links are already in spec/build/bsps/arm/stm32h7/grp.yml.

spec/build/bsps/arm/stm32h7/obj.yml

@@ -173,95 +173,7 @@ install:
   source:
   - bsps/arm/stm32h7/start/bsp_specs
 ldflags: []
-links:
-- role: build-dependency
-  uid: ../../obj
-- role: build-dependency
-  uid: ../../objirq
-- role: build-dependency
-  uid: ../../opto2
-- role: build-dependency
-  uid: abi
-- role: build-dependency
-  uid: optenmpualign
-- role: build-dependency
-  uid: optenuart4
-- role: build-dependency
-  uid: optenuart5
-- role: build-dependency
-  uid: optenuart7
-- role: build-dependency
-  uid: optenuart8
-- role: build-dependency
-  uid: optenuart9
-- role: build-dependency
-  uid: optenusart10
-- role: build-dependency
-  uid: optenusart1
-- role: build-dependency
-  uid: optenusart2
-- role: build-dependency
-  uid: optenusart3
-- role: build-dependency
-  uid: optenusart6
-- role: build-dependency
-  uid: opthse
-- role: build-dependency
-  uid: optlinkcmds
-- role: build-dependency
-  uid: optmemdtcmsz
-- role: build-dependency
-  uid: optmemflashsz
-- role: build-dependency
-  uid: optmemitcmsz
-- role: build-dependency
-  uid: optmemnandsz
-- role: build-dependency
-  uid: optmemnorsz
-- role: build-dependency
-  uid: optmemnullsz
-- role: build-dependency
-  uid: optmemperipheralsz
-- role: build-dependency
-  uid: optmemquadspisz
-- role: build-dependency
-  uid: optmemsdram1sz
-- role: build-dependency
-  uid: optmemsdram2sz
-- role: build-dependency
-  uid: optmemsram1sz
-- role: build-dependency
-  uid: optmemsram2sz
-- role: build-dependency
-  uid: optmemsram3sz
-- role: build-dependency
-  uid: optmemsram4sz
-- role: build-dependency
-  uid: optmemsramaxisz
-- role: build-dependency
-  uid: optmemsrambackupsz
-- role: build-dependency
-  uid: optprintkinstance
-- role: build-dependency
-  uid: optvariant
-- role: build-dependency
-  uid: ../../optconsolebaud
-- role: build-dependency
-  uid: ../../optconsoleirq
-- role: build-dependency
-  uid: ../grp
-- role: build-dependency
-  uid: ../start
-- role: build-dependency
-  uid: linkcmdsflash
-- role: build-dependency
-  uid: linkcmdsmemory
-- role: build-dependency
-  uid: linkcmds
-- role: build-dependency
-  uid: linkcmdssdram
-- role: build-dependency
-  uid: ../../bspopts
+links: []
 source:
 - bsps/arm/shared/cache/cache-v7m.c
 - bsps/arm/shared/clock/clock-armv7m.c