Update configure.py

Author: aduh95

configure.py

@@ -2126,7 +2126,7 @@ def without_ssl_error(option):
 def configure_lief(o):
   if options.without_lief:
     if options.shared_lief:
-      error(f'--without-lief is incompatible with --shared-lief')
+      error('--without-lief is incompatible with --shared-lief')
     return
 
   configure_library('lief', o, pkgname='LIEF')