Revert "i915: don't use a vma that didn't match the context VM"

Revert "i915: don't use a vma that didn't match the context VM"

This reverts commit 5401b9adebc9e5f68df58226f51493ef0e6ceb4d.

Superseded by a13edf9b92fc ("drm/i915/gem: Drop check for changed
VM in EXECBUF"). Else block is now no-op.

Link: https://lore.kernel.org/intel-gfx/CAHk-=whfUM8y3PoFfT21+guKWK-mJmAE=8uLzOT+7HGv5NtqSw@mail.gmail.com/
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://patch.msgid.link/20260518092941.47247-1-joonas.lahtinen@linux.intel.com