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diff --git a/src/core/GLES_COMPUTE/cs_shaders/activation_layer_helpers_cs.h b/src/core/GLES_COMPUTE/cs_shaders/activation_layer_helpers_cs.h
deleted file mode 100644
index e0eacf8dc4..0000000000
--- a/src/core/GLES_COMPUTE/cs_shaders/activation_layer_helpers_cs.h
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@@ -1,130 +0,0 @@
-/*
- * Copyright (c) 2018-2019 ARM Limited.
- *
- * SPDX-License-Identifier: MIT
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-#ifdef DATA_TYPE_FP32
-precision highp float;
-#elif defined(DATA_TYPE_FP16)
-#if defined(LOGISTIC) || defined(TANH) || defined(SRELU) || defined(SQRT)
-precision highp float;
-#else /*LOGISTIC_TANH_SRELU_SQRT*/
-precision mediump float;
-#endif /*LOGISTIC_TANH_SRELU_SQRT*/
-#endif /*DATA_TYPE_FP32*/
-
-#define ABS_OP(a) abs((a))
-#define ADD_OP(a, b) ((a) + (b))
-#define SUB_OP(a, b) ((a) - (b))
-#define MUL_OP(a, b) ((a) * (b))
-#define MLA_OP(a, b, c) ((b) * (c) + (a))
-#define DIV_OP(a, b) ((a) / (b))
-#define EXP_OP(a) exp((a))
-#define LOG_OP(a) log((a))
-#define SQRT_OP(a) sqrt((a))
-#define CONST_ONE (1.f)
-
-// Logistic Activation
-float logistic_op(float x)
-{
- return DIV_OP(CONST_ONE, ADD_OP(CONST_ONE, EXP_OP(-x)));
-}
-vec4 logistic_op(vec4 x)
-{
- return DIV_OP(vec4(CONST_ONE), ADD_OP(CONST_ONE, EXP_OP(-x)));
-}
-// Hyperbolic Tangent Activation
-float tanh_op(float x)
-{
- float tmp = float(B_VAL) * x;
- if(tmp > 10.f)
- {
- return MUL_OP(float(A_VAL), 1.f);
- }
- else if(tmp < -10.f)
- {
- return MUL_OP(float(A_VAL), -1.f);
- }
- else
- {
- return MUL_OP(float(A_VAL), tanh(tmp + 0.000001f));
- }
-}
-// RELU Tangent Activation
-float relu_op(float x)
-{
- return max(0.f, x);
-}
-vec4 relu_op(vec4 x)
-{
- return max(vec4(0.f), x);
-}
-// Bounded RELU Activation
-float brelu_op(float x)
-{
- return min(float(A_VAL), max(float(0.0), x));
-}
-// Lower Upper Bounded RELU Activation
-float lu_brelu_op(float x)
-{
- return min(max(x, float(B_VAL)), float(A_VAL));
-}
-// Leaky RELU Activation
-float lrelu_op(float x)
-{
- return (x > float(0.0)) ? x : MUL_OP(float(A_VAL), x);
-}
-// Soft RELU Activation
-float srelu_op(float x)
-{
- return LOG_OP(ADD_OP(CONST_ONE, EXP_OP(x)));
-}
-// ELU Activation
-float elu_op(float x)
-{
- return (x >= float(0.0)) ? x : MUL_OP(float(A_VAL), SUB_OP(EXP_OP(x), CONST_ONE));
-}
-// Absolute Activation
-float abs_op(float x)
-{
- return ABS_OP(x);
-}
-// Square Activation
-float square_op(float x)
-{
- return MUL_OP(x, x);
-}
-// Square-root Activation
-float sqrt_op(float x)
-{
- return SQRT_OP(x);
-}
-// Linear Activation
-float linear_op(float x)
-{
- return MLA_OP(float(B_VAL), float(A_VAL), x);
-}
-
-// Linear Activation
-float identity_op(float x)
-{
- return x;
-}