Remove deprecated support for BF16 in CpuCast

Resolves : [COMPMID-6212]

Signed-off-by: Omar Al Khatib <omar.alkhatib@arm.com>
Signed-off-by: Adnan AlSinan <adnan.alsinan@arm.com>
Change-Id: I29bbd9a3d96af462faf7f0ee13b9849f75e05356
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/10319
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
diff --git a/filelist.json b/filelist.json
index 2a88aec..23ee9ca 100644
--- a/filelist.json
+++ b/filelist.json
@@ -1051,8 +1051,7 @@
           "common": [
             "src/cpu/operators/CpuCast.cpp",
             "src/cpu/kernels/CpuCastKernel.cpp",
-            "src/runtime/NEON/functions/NECast.cpp",
-            "src/cpu/kernels/cast/generic/neon/bfloat16.cpp"
+            "src/runtime/NEON/functions/NECast.cpp"
           ],
           "neon":{
             "fp16":["src/cpu/kernels/cast/generic/neon/fp16.cpp"]