Remove Taproot activation height

Drop DEPLOYMENT_TAPROOT from consensus.vDeployments.

Bump MinBIP9WarningHeight.

Clarify what is considered a BuriedDeployment and
drop taproot from getdeploymentinfo RPC.

Add a test to getblocktemplate to ensure the taproot
rule is still set.

Co-Authored-By: MarcoFalke <*~=`'#}+{/-|&$^_@721217.xyz>

test/functional/mining_basic.py

@@ -436,6 +436,9 @@ class MiningTest(BitcoinTestFramework):
         self.log.info("getblocktemplate: segwit rule must be set")
         assert_raises_rpc_error(-8, "getblocktemplate must be called with the segwit rule set", node.getblocktemplate, {})
 
+        self.log.info("getblocktemplate: result should set the right rules")
+        assert_equal(['csv', '!segwit', 'taproot'], self.nodes[0].getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)['rules'])
+
         self.log.info("submitblock: Test block decode failure")
         assert_raises_rpc_error(-22, "Block decode failed", node.submitblock, block.serialize()[:-15].hex())