diff --git a/src/chainparams.cpp b/src/chainparams.cpp
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -99,17 +99,6 @@
         consensus.nPowTargetSpacing = 10 * 60;
         consensus.fPowAllowMinDifficultyBlocks = false;
         consensus.fPowNoRetargeting = false;
-        // 95% of 2016
-        consensus.nRuleChangeActivationThreshold = 1916;
-        // nPowTargetTimespan / nPowTargetSpacing
-        consensus.nMinerConfirmationWindow = 2016;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
-        // January 1, 2008
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime =
-            1199145601;
-        // December 31, 2008
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout =
-            1230767999;
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S(
@@ -276,17 +265,6 @@
         consensus.nPowTargetSpacing = 10 * 60;
         consensus.fPowAllowMinDifficultyBlocks = true;
         consensus.fPowNoRetargeting = false;
-        // 75% for testchains
-        consensus.nRuleChangeActivationThreshold = 1512;
-        // nPowTargetTimespan / nPowTargetSpacing
-        consensus.nMinerConfirmationWindow = 2016;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
-        // January 1, 2008
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime =
-            1199145601;
-        // December 31, 2008
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout =
-            1230767999;
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S(
@@ -407,14 +385,6 @@
         consensus.nPowTargetSpacing = 10 * 60;
         consensus.fPowAllowMinDifficultyBlocks = true;
         consensus.fPowNoRetargeting = true;
-        // 75% for testchains
-        consensus.nRuleChangeActivationThreshold = 108;
-        // Faster than normal for regtest (144 instead of 2016)
-        consensus.nMinerConfirmationWindow = 144;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
-        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout =
-            999999999999ULL;
 
         // The best chain should have at least this much work.
         consensus.nMinimumChainWork = uint256S("0x00");
diff --git a/src/consensus/params.h b/src/consensus/params.h
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -13,28 +13,6 @@
 
 namespace Consensus {
 
-enum DeploymentPos {
-    DEPLOYMENT_TESTDUMMY,
-    // NOTE: Also add new deployments to VersionBitsDeploymentInfo in
-    // versionbits.cpp
-    MAX_VERSION_BITS_DEPLOYMENTS
-};
-
-/**
- * Struct for each individual consensus rule change using BIP9.
- */
-struct BIP9Deployment {
-    /** Bit position to select the particular bit in nVersion. */
-    int bit;
-    /**
-     * Start MedianTime for version bits miner confirmation. Can be a date in
-     * the past.
-     */
-    int64_t nStartTime;
-    /** Timeout/expiry MedianTime for the deployment attempt. */
-    int64_t nTimeout;
-};
-
 /**
  * Parameters that influence chain consensus.
  */
@@ -60,15 +38,6 @@
     int greatWallActivationTime;
     /** Unix time used for MTP activation of Nov 15 2019 12:00:00 UTC upgrade */
     int gravitonActivationTime;
-    /**
-     * Minimum blocks including miner confirmation of the total of 2016 blocks
-     * in a retargeting period, (nPowTargetTimespan / nPowTargetSpacing) which
-     * is also used for BIP9 deployments.
-     * Examples: 1916 for 95%, 1512 for testchains.
-     */
-    uint32_t nRuleChangeActivationThreshold;
-    uint32_t nMinerConfirmationWindow;
-    BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS];
     /** Proof of work parameters */
     uint256 powLimit;
     bool fPowAllowMinDifficultyBlocks;