COMPMID-3324: Remove pretransposed support from NEON backend

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I394c6c539969940e0119cbc14174909d47e65de6
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3519
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/arm_gemm/quantized.cpp b/src/core/NEON/kernels/arm_gemm/quantized.cpp
index fbf49c8..e50dca7 100644
--- a/src/core/NEON/kernels/arm_gemm/quantized.cpp
+++ b/src/core/NEON/kernels/arm_gemm/quantized.cpp
@@ -645,9 +645,9 @@
 
                     vst1q_s32(row_bias, t0);
                     break;
+
                 default:
                     UNREACHABLE("Impossible.");
-
             }
         }