arch-arm: Remove unused float operands

Removing FaP1 and FDest2 since they are not currently used by any ARM
instruction.

Change-Id: I4251dfcdd3f4434caaf0bdab507c1c3bd53fb5d2
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/15596
Reviewed-by: Ciro Santilli <ciro.santilli@gmail.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
1 file changed