util/format: remove an offending assert
block.bits for planar formats is left as zero after commit 20f132e5 ("gallium/util: add planar format layouts and helpers").
The assert is hit with ARCVM camera interop with debug build of host radeonsi.
block.bits for planar formats is left as zero after commit 20f132e5 ("gallium/util: add planar format layouts and helpers").
The assert is hit with ARCVM camera interop with debug build of host radeonsi.