utils/genrandconfig: drop hardening Config enables

Since 810ba387bec3c5b, some form of these options are enable
by default. Specifically:

- Kept FORTIFY level 2 option as the default is now level 1.
- Removed all SSP options as the default now uses the best
  option based on toolchain support.
- Similar to SSP, for RELRO, the default now uses the best
  option based on toolchain support.
- Completely drop PIC PIE as it defaults =y

Signed-off-by: Matthew Weber <matthew.weber@collins.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

utils/genrandconfig

@@ -371,22 +371,8 @@ def gen_config(args):
         configlines.append("BR2_OPTIMIZE_2=y\n")
     if randint(0, 4) == 0:
         configlines.append("BR2_SYSTEM_ENABLE_NLS=y\n")
-    if randint(0, 4) == 0:
-        configlines.append("BR2_PIC_PIE=y\n")
-    if randint(0, 4) == 0:
-        configlines.append("BR2_RELRO_FULL=y\n")
-    elif randint(0, 4) == 0:
-        configlines.append("BR2_RELRO_PARTIAL=y\n")
-    if randint(0, 4) == 0:
-        configlines.append("BR2_SSP_ALL=y\n")
-    elif randint(0, 4) == 0:
-        configlines.append("BR2_SSP_REGULAR=y\n")
-    elif randint(0, 4) == 0:
-        configlines.append("BR2_SSP_STRONG=y\n")
     if randint(0, 4) == 0:
         configlines.append("BR2_FORTIFY_SOURCE_2=y\n")
-    elif randint(0, 4) == 0:
-        configlines.append("BR2_FORTIFY_SOURCE_1=y\n")
 
     # Randomly enable BR2_REPRODUCIBLE 10% of times
     # also enable tar filesystem images for testing