Remove Computer Vision generic interfaces and types

Removes:
    - reference validation routines
    - CV related types and structures
    - CV related interfaces

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I3a203da12d9b04c154059b190aeba18a611149a9
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5340
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/arm_compute/runtime/Array.h b/arm_compute/runtime/Array.h
index 5b98b6c..21d9c25 100644
--- a/arm_compute/runtime/Array.h
+++ b/arm_compute/runtime/Array.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020 Arm Limited.
+ * Copyright (c) 2016-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -60,14 +60,6 @@
     std::unique_ptr<T[]> _values;
 };
 
-/** Array of Key Points. */
-using KeyPointArray = Array<KeyPoint>;
-/** Array of 2D Coordinates. */
-using Coordinates2DArray = Array<Coordinates2D>;
-/** Array of Detection Windows. */
-using DetectionWindowArray = Array<DetectionWindow>;
-/** Array of 2D Sizes. */
-using Size2DArray = Array<Size2D>;
 /** Array of uint8s. */
 using UInt8Array = Array<uint8_t>;
 /** Array of uint16s. */