COMPMID-2486: Remove disabled compiler warnings

Removed the following flags:
-Wno-format-nonliteral: This had a side effect on
Error.h that resulted in rewriting most of the macros. Since
I was at it I removed all the va_args in order to comply
with DCL50-CPP.
-Wno-deprecated-increment-bool
-Wno-vla-extension
-Wno-mismatched-tags
-Wno-redundant-move

Change-Id: I7c593854ecc3b7d595b8edcbd6a86d3c2563c6bd
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2069
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/arm_compute/core/TensorInfo.h b/arm_compute/core/TensorInfo.h
index 77913f5..d1a64f5 100644
--- a/arm_compute/core/TensorInfo.h
+++ b/arm_compute/core/TensorInfo.h
@@ -236,7 +236,7 @@
     {
         return _offset_first_element_in_bytes;
     }
-    size_t offset_element_in_bytes(const Coordinates &pos) const override;
+    int32_t offset_element_in_bytes(const Coordinates &pos) const override;
     size_t element_size() const override
     {
         return data_size_from_type(_data_type) * _num_channels;