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/src/core/SubTensorInfo.cpp b/src/core/SubTensorInfo.cpp
index 237f133..2db76b4 100644
--- a/src/core/SubTensorInfo.cpp
+++ b/src/core/SubTensorInfo.cpp
@@ -123,11 +123,11 @@
     return _parent->extend_padding(padding);
 }
 
-size_t SubTensorInfo::offset_element_in_bytes(const Coordinates &pos) const
+int32_t SubTensorInfo::offset_element_in_bytes(const Coordinates &pos) const
 {
     ARM_COMPUTE_ERROR_ON_COORDINATES_DIMENSIONS_GTE(pos, _tensor_shape.num_dimensions());
 
-    size_t         offset  = offset_first_element_in_bytes();
+    int32_t         offset  = offset_first_element_in_bytes();
     const Strides &strides = strides_in_bytes();
 
     for(size_t i = 0; i < _tensor_shape.num_dimensions(); ++i)