remove unused get_software_version from FFTW easyblock

Author: lexming

easybuild/easyblocks/f/fftw.py

@@ -36,7 +36,6 @@
 from easybuild.toolchains.compiler.fujitsu import TC_CONSTANT_FUJITSU
 from easybuild.tools.build_log import EasyBuildError
 from easybuild.tools.config import build_option
-from easybuild.tools.modules import get_software_version
 from easybuild.tools.systemtools import AARCH32, AARCH64, POWER, RISCV32, RISCV64, X86_64
 from easybuild.tools.systemtools import get_cpu_architecture, get_cpu_features, get_shared_lib_ext
 from easybuild.tools.toolchain.compiler import OPTARCH_GENERIC