-ftree-vectorize is redundant with -O3

Signed-off-by: Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
Change-Id: If10b667f9a1ba6e48d8211b8db4dcf37df0c3c1d
Reviewed-on: https://review.mlplatform.org/c/1570
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: VidhyaSudhan Loganathan <vidhyasudhan.loganathan@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/SConstruct b/SConstruct
index 5fa6cdf..6fea51b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -281,7 +281,7 @@
     env.Append(CXXFLAGS = ['-O0','-g','-gdwarf-2'])
     env.Append(CPPDEFINES = ['ARM_COMPUTE_DEBUG_ENABLED'])
 else:
-    env.Append(CXXFLAGS = ['-O3','-ftree-vectorize'])
+    env.Append(CXXFLAGS = ['-O3'])
 
 if env['asserts']:
     env.Append(CPPDEFINES = ['ARM_COMPUTE_ASSERTS_ENABLED'])