diff --git a/core/sme/inc/csr_support.h b/core/sme/inc/csr_support.h
index 7daee31834d3..f5b050dfe7ab 100644
--- a/core/sme/inc/csr_support.h
+++ b/core/sme/inc/csr_support.h
@@ -307,8 +307,6 @@ bool csr_is_bssid_match(struct qdf_mac_addr *pProfBssid,
 void csr_add_rate_bitmap(uint8_t rate, uint16_t *pRateBitmap);
 bool csr_check_rate_bitmap(uint8_t rate, uint16_t RateBitmap);
 bool csr_rates_is_dot11_rate_supported(struct mac_context *mac_ctx, uint8_t rate);
-uint16_t csr_rates_find_best_rate(tSirMacRateSet *pSuppRates,
-		tSirMacRateSet *pExtRates, tSirMacPropRateSet *pPropRates);
 tSirBssType csr_translate_bsstype_to_mac_type(eCsrRoamBssType csrtype);
 /* Caller allocates memory for pIEStruct */
 QDF_STATUS csr_parse_bss_description_ies(struct mac_context *mac_ctx,
diff --git a/core/sme/src/csr/csr_util.c b/core/sme/src/csr/csr_util.c
index 99328aaf14e5..f082c3b38d2e 100644
--- a/core/sme/src/csr/csr_util.c
+++ b/core/sme/src/csr/csr_util.c
@@ -5755,132 +5755,6 @@ bool csr_rates_is_dot11_rate_supported(struct mac_context *mac_ctx, uint8_t rate
 	return csr_is_aggregate_rate_supported(mac_ctx, n);
 }
 
-static uint16_t csr_rates_mac_prop_to_dot11(uint16_t Rate)
-{
-	uint16_t ConvertedRate = Rate;
-
-	switch (Rate) {
-	case SIR_MAC_RATE_1:
-		ConvertedRate = 2;
-		break;
-	case SIR_MAC_RATE_2:
-		ConvertedRate = 4;
-		break;
-	case SIR_MAC_RATE_5_5:
-		ConvertedRate = 11;
-		break;
-	case SIR_MAC_RATE_11:
-		ConvertedRate = 22;
-		break;
-
-	case SIR_MAC_RATE_6:
-		ConvertedRate = 12;
-		break;
-	case SIR_MAC_RATE_9:
-		ConvertedRate = 18;
-		break;
-	case SIR_MAC_RATE_12:
-		ConvertedRate = 24;
-		break;
-	case SIR_MAC_RATE_18:
-		ConvertedRate = 36;
-		break;
-	case SIR_MAC_RATE_24:
-		ConvertedRate = 48;
-		break;
-	case SIR_MAC_RATE_36:
-		ConvertedRate = 72;
-		break;
-	case SIR_MAC_RATE_42:
-		ConvertedRate = 84;
-		break;
-	case SIR_MAC_RATE_48:
-		ConvertedRate = 96;
-		break;
-	case SIR_MAC_RATE_54:
-		ConvertedRate = 108;
-		break;
-
-	case SIR_MAC_RATE_72:
-		ConvertedRate = 144;
-		break;
-	case SIR_MAC_RATE_84:
-		ConvertedRate = 168;
-		break;
-	case SIR_MAC_RATE_96:
-		ConvertedRate = 192;
-		break;
-	case SIR_MAC_RATE_108:
-		ConvertedRate = 216;
-		break;
-	case SIR_MAC_RATE_126:
-		ConvertedRate = 252;
-		break;
-	case SIR_MAC_RATE_144:
-		ConvertedRate = 288;
-		break;
-	case SIR_MAC_RATE_168:
-		ConvertedRate = 336;
-		break;
-	case SIR_MAC_RATE_192:
-		ConvertedRate = 384;
-		break;
-	case SIR_MAC_RATE_216:
-		ConvertedRate = 432;
-		break;
-	case SIR_MAC_RATE_240:
-		ConvertedRate = 480;
-		break;
-
-	case 0xff:
-		ConvertedRate = 0;
-		break;
-	}
-
-	return ConvertedRate;
-}
-
-uint16_t csr_rates_find_best_rate(tSirMacRateSet *pSuppRates,
-				  tSirMacRateSet *pExtRates,
-				  tSirMacPropRateSet *pPropRates)
-{
-	uint8_t i;
-	uint16_t nBest;
-
-	nBest = pSuppRates->rate[0] & (~CSR_DOT11_BASIC_RATE_MASK);
-
-	if (pSuppRates->numRates > SIR_MAC_RATESET_EID_MAX)
-		pSuppRates->numRates = SIR_MAC_RATESET_EID_MAX;
-
-	for (i = 1U; i < pSuppRates->numRates; ++i) {
-		nBest =
-			(uint16_t) CSR_MAX(nBest,
-					   pSuppRates->
-					rate[i] & (~CSR_DOT11_BASIC_RATE_MASK));
-	}
-
-	if (NULL != pExtRates) {
-		for (i = 0U; i < pExtRates->numRates; ++i) {
-			nBest =
-				(uint16_t) CSR_MAX(nBest,
-						   pExtRates->
-						   rate[i] &
-						  (~CSR_DOT11_BASIC_RATE_MASK));
-		}
-	}
-
-	if (NULL != pPropRates) {
-		for (i = 0U; i < pPropRates->numPropRates; ++i) {
-			nBest =
-				(uint16_t) CSR_MAX(nBest,
-						   csr_rates_mac_prop_to_dot11
-						(pPropRates->propRate[i]));
-		}
-	}
-
-	return nBest;
-}
-
 #ifdef WLAN_FEATURE_FILS_SK
 static inline void csr_free_fils_profile_info(struct csr_roam_profile *profile)
 {