petalinux-image-common.inc: Removing fpga-manager
petalinux-image-common.inc: Removing fpga-manager

fpga-manager is being changed to DISTRO_FEATURE, removing IMAGE_FEATURE
wiring

Signed-off-by: Jaewon Lee <1b369288d13b7b5cc9a37dd614e864b90fd18321@xilinx.com>

Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux,Xilinx/meta-petalinux