Revert "ypkg2: Only enable fakeroot during the install & check steps"

This reverts commit bcf1b16.

ypkg2/main.py

@@ -150,12 +150,6 @@ def execute_step(context, step, step_n, work_dir):
     if context.avx2 and step_n == "install":
         endScript = "%avx2_lib_shift"
 
-    # We only want fakeroot for the install and check steps due
-    # to massive performance overhead.
-    # This is a quick n' dirty way of achieving that
-    if not step_n in ["install", "check"]:
-        script.define_unexport("LD_PRELOAD")
-
     exports = script.emit_exports()
 
     # Run via bash with enable and error