diff --git a/debian/postinst b/debian/postinst
index 6da42db..0f4e021 100755
--- a/debian/postinst
+++ b/debian/postinst
@@ -159,24 +159,6 @@ log("Building dlib")
 
 cmd = ["sudo", "python3", "setup.py", "install"]
 cuda_used = False
-flags = ""
-
-# Get the CPU details
-with open("/proc/cpuinfo") as info:
-	for line in info:
-		if "flags" in line:
-			flags = line
-			break
-
-# Use the most efficient instruction set the CPU supports
-if "avx" in flags:
-	cmd += ["--yes", "USE_AVX_INSTRUCTIONS"]
-elif "sse4" in flags:
-	cmd += ["--yes", "USE_SSE4_INSTRUCTIONS"]
-elif "sse3" in flags:
-	cmd += ["--yes", "USE_SSE3_INSTRUCTIONS"]
-elif "sse2" in flags:
-	cmd += ["--yes", "USE_SSE2_INSTRUCTIONS"]
 
 # Compile and link dlib
 try: