Remove UpdateVersionBitsParameters

Moves setting struct member fields from a function to its call site.
This improves readability by surfacing the code.

src/chainparams.cpp

@@ -463,7 +463,9 @@ class CRegTestParams : public CChainParams
         }
 
         for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
-            UpdateVersionBitsParameters(deployment_pos, version_bits_params.start_time, version_bits_params.timeout, version_bits_params.min_activation_height);
+            consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
+            consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
+            consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
         }
 
         genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
@@ -511,16 +513,6 @@ class CRegTestParams : public CChainParams
 
         bech32_hrp = "bcrt";
     }
-
-    /**
-     * Allows modifying the Version Bits regtest parameters.
-     */
-    void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int min_activation_height)
-    {
-        consensus.vDeployments[d].nStartTime = nStartTime;
-        consensus.vDeployments[d].nTimeout = nTimeout;
-        consensus.vDeployments[d].min_activation_height = min_activation_height;
-    }
 };
 
 void ReadRegTestArgs(const ArgsManager& args, CChainParams::RegTestOptions& options)