code cleanup: there is no MoveError and sinks are always available

lib/system.nim

@@ -236,7 +236,6 @@ proc reset*[T](obj: var T) {.magic: "Reset", noSideEffect.}
   ## resets an object `obj` to its initial (binary zero) value. This needs to
   ## be called before any possible `object branch transition`:idx:.
 
-when defined(nimNewRuntime):
 proc wasMoved*[T](obj: var T) {.magic: "WasMoved", noSideEffect.} =
   ## resets an object `obj` to its initial (binary zero) value to signify
   ## it was "moved" and to signify its destructor should do nothing and
@@ -268,10 +267,6 @@ else:
     UncheckedArray*{.unchecked.}[T] = array[0,T]
     ## Array with no bounds checking
 
-when defined(nimHasOpt):
-  type opt*{.magic: "Opt".}[T]
-
-when defined(nimNewRuntime):
 type sink*{.magic: "BuiltinType".}[T]
 type lent*{.magic: "BuiltinType".}[T]
 
@@ -388,7 +383,6 @@ when defined(nimArrIdx):
   proc arrPut[I: Ordinal;T,S](a: T; i: I;
     x: S) {.noSideEffect, magic: "ArrPut".}
 
-  when defined(nimNewRuntime):
   proc `=destroy`*[T](x: var T) {.inline, magic: "Destroy".} =
     ## generic `destructor`:idx: implementation that can be overriden.
     discard
@@ -676,11 +670,6 @@ type
     ##
     ## This is only raised if the ``segfaults.nim`` module was imported!
 
-when defined(nimNewRuntime):
-  type
-    MoveError* = object of Defect ## \
-      ## Raised on attempts to re-sink an already consumed ``sink`` parameter.
-
 when defined(js) or defined(nimdoc):
   type
     JsRoot* = ref object of RootObj

lib/system/chcks.nim

@@ -59,11 +59,6 @@ proc chckNil(p: pointer) =
   if p == nil:
     sysFatal(NilAccessError, "attempt to write to a nil address")
 
-when defined(nimNewRuntime):
-  proc chckMove(b: bool) {.compilerproc.} =
-    if not b:
-      sysFatal(MoveError, "attempt to access an object that was moved")
-
 proc chckNilDisp(p: pointer) {.compilerproc.} =
   if p == nil:
     sysFatal(NilAccessError, "cannot dispatch; dispatcher is nil")