Revert "Moved EthTime to constants, update more timestamps to EthTime"

This reverts commit a731f59bd3.

src/chain.nim

@@ -31,7 +31,7 @@ type
     nonce*: string
     mixHash*: string
     extraData*: string
-    timestamp*: EthTime
+    timestamp*: int
     stateRoot*: string
 
   FundedAddress* = ref object

src/constants.nim

@@ -1,12 +1,11 @@
 
 import
-  ttmath, math, strutils, tables, utils/padding, rlp, times
+  ttmath, math, strutils, tables, utils/padding, rlp
 
 # rlpFields UInt256, table
 
 type
   TypeHint* {.pure.} = enum UInt256, Bytes, Any
-  EthTime* = Time
 
   #Bytes* = seq[byte]
 

src/utils/header.nim

@@ -1,6 +1,7 @@
 import ../constants, ttmath, strformat, times, ../validation
 
 type
+  EthTime = Time
   Header* = ref object
     timestamp*: EthTime
     difficulty*: UInt256

src/vm_state.nim

@@ -44,7 +44,7 @@ method blockhash*(vmState: BaseVMState): string =
 method coinbase*(vmState: BaseVMState): string =
   vmState.blockHeader.coinbase
 
-method timestamp*(vmState: BaseVMState): EthTime =
+method timestamp*(vmState: BaseVMState): int =
   vmState.blockHeader.timestamp
 
 method blockNumber*(vmState: BaseVMState): UInt256 =