fpgaperf: cleanup

Signed-off-by: Unai Martinez-Corral <[email protected]>

Author: umarcor

fpgaperf.py

@@ -28,9 +28,7 @@
 
 from toolchains.icestorm import NextpnrIcestorm
 from toolchains.nextpnr import NextpnrOxide, NextpnrXilinx, NextpnrFPGAInterchange
-from toolchains.vivado import Vivado
-from toolchains.vivado import VivadoYosys
-from toolchains.vivado import VivadoYosysUhdm
+from toolchains.vivado import Vivado, VivadoYosys, VivadoYosysUhdm
 from toolchains.symbiflow import VPR, Quicklogic
 from toolchains.fasm2bels import VPRFasm2Bels, NextpnrXilinxFasm2Bels
 from toolchains.radiant import RadiantSynpro, RadiantLSE