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diff --git a/fw/hid-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c b/fw/hid-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c
deleted file mode 100644
index 147c8c5..0000000
--- a/fw/hid-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df1_init_f32.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/* ----------------------------------------------------------------------
- * Project:      CMSIS DSP Library
- * Title:        arm_biquad_cascade_df1_init_f32.c
- * Description:  Floating-point Biquad cascade DirectFormI(DF1) filter initialization function
- *
- * $Date:        27. January 2017
- * $Revision:    V.1.5.1
- *
- * Target Processor: Cortex-M cores
- * -------------------------------------------------------------------- */
-/*
- * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "arm_math.h"
-
-/**
- * @ingroup groupFilters
- */
-
-/**
- * @addtogroup BiquadCascadeDF1
- * @{
- */
-
-/**
- * @details
- * @brief  Initialization function for the floating-point Biquad cascade filter.
- * @param[in,out] *S           points to an instance of the floating-point Biquad cascade structure.
- * @param[in]     numStages    number of 2nd order stages in the filter.
- * @param[in]     *pCoeffs     points to the filter coefficients array.
- * @param[in]     *pState      points to the state array.
- * @return        none
- *
- *
- * <b>Coefficient and State Ordering:</b>
- *
- * \par
- * The coefficients are stored in the array <code>pCoeffs</code> in the following order:
- * <pre>
- *     {b10, b11, b12, a11, a12, b20, b21, b22, a21, a22, ...}
- * </pre>
- *
- * \par
- * where <code>b1x</code> and <code>a1x</code> are the coefficients for the first stage,
- * <code>b2x</code> and <code>a2x</code> are the coefficients for the second stage,
- * and so on.  The <code>pCoeffs</code> array contains a total of <code>5*numStages</code> values.
- *
- * \par
- * The <code>pState</code> is a pointer to state array.
- * Each Biquad stage has 4 state variables <code>x[n-1], x[n-2], y[n-1],</code> and <code>y[n-2]</code>.
- * The state variables are arranged in the <code>pState</code> array as:
- * <pre>
- *     {x[n-1], x[n-2], y[n-1], y[n-2]}
- * </pre>
- * The 4 state variables for stage 1 are first, then the 4 state variables for stage 2, and so on.
- * The state array has a total length of <code>4*numStages</code> values.
- * The state variables are updated after each block of data is processed; the coefficients are untouched.
- *
- */
-
-void arm_biquad_cascade_df1_init_f32(
-  arm_biquad_casd_df1_inst_f32 * S,
-  uint8_t numStages,
-  float32_t * pCoeffs,
-  float32_t * pState)
-{
-  /* Assign filter stages */
-  S->numStages = numStages;
-
-  /* Assign coefficient pointer */
-  S->pCoeffs = pCoeffs;
-
-  /* Clear state buffer and size is always 4 * numStages */
-  memset(pState, 0, (4U * (uint32_t) numStages) * sizeof(float32_t));
-
-  /* Assign state pointer */
-  S->pState = pState;
-}
-
-/**
- * @} end of BiquadCascadeDF1 group
- */