Drop vm_mmap_min_addr checks from scripts and sanity class

QEMU 0.12.x is relocatable so we no longer need these tests, which is good
because it doesn't work reliably with modern kernels.

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/classes/sanity.bbclass

@@ -101,17 +101,6 @@ def check_sanity(e):
 		if not check_app_exists("qemu-arm", e.data):
 			messages = messages + "qemu-native was in ASSUME_PROVIDED but the QEMU binaries (qemu-arm) can't be found in PATH"
 
-	if data.getVar('TARGET_ARCH', e.data, True) == "arm":
-                # This path is no longer user-readable in modern (very recent) Linux
-                try:
-                        if os.path.exists("/proc/sys/vm/mmap_min_addr"):
-                                f = file("/proc/sys/vm/mmap_min_addr", "r")
-                                if (f.read().strip() != "0"):
-                                        messages = messages + "/proc/sys/vm/mmap_min_addr is not 0. This will cause problems with qemu so please fix the value (as root).\n\nTo fix this in later reboots, set vm.mmap_min_addr = 0 in /etc/sysctl.conf.\n"
-                                f.close()
-                except:
-                        pass
-
 	for util in required_utilities.split():
 		if not check_app_exists( util, e.data ):
 			missing = missing + "%s," % util