remove legacy code (#21134)

* remove legacy code

* fixes

lib/std/assertions.nim

@@ -23,8 +23,6 @@ proc `$`(info: InstantiationInfo): string =
 
 # ---------------------------------------------------------------------------
 
-when not defined(nimHasSinkInference):
-  {.pragma: nosinks.}
 
 proc raiseAssert*(msg: string) {.noinline, noreturn, nosinks.} =
   ## Raises an `AssertionDefect` with `msg`.

lib/std/jsonutils.nim

@@ -37,22 +37,8 @@ from typetraits import OrdinalEnum, tupleLen
 when defined(nimPreviewSlimSystem):
   import std/assertions
 
-when not defined(nimFixedForwardGeneric):
-  # xxx remove pending csources_v1 update >= 1.2.0
-  proc to[T](node: JsonNode, t: typedesc[T]): T =
-    when T is string: node.getStr
-    elif T is bool: node.getBool
-    else: static: doAssert false, $T # support as needed (only needed during bootstrap)
-  proc isNamedTuple(T: typedesc): bool = # old implementation
-    when T isnot tuple: result = false
-    else:
-      var t: T
-      for name, _ in t.fieldPairs:
-        when name == "Field0": return compiles(t.Field0)
-        else: return true
-      return false
-else:
-  proc isNamedTuple(T: typedesc): bool {.magic: "TypeTrait".}
+
+proc isNamedTuple(T: typedesc): bool {.magic: "TypeTrait".}
 
 type
   Joptions* = object # xxx rename FromJsonOptions

lib/std/private/miscdollars.nim

@@ -13,21 +13,7 @@ template toLocation*(result: var string, file: string | cstring, line: int, col:
       addInt(result, col)
     result.add ")"
 
-when defined(nimHasIsNamedTuple):
-  proc isNamedTuple(T: typedesc): bool {.magic: "TypeTrait".}
-else:
-  # for bootstrap; remove after release 1.2
-  proc isNamedTuple(T: typedesc): bool =
-    # Taken from typetraits.
-    when T isnot tuple: result = false
-    else:
-      var t: T
-      for name, _ in t.fieldPairs:
-        when name == "Field0":
-          return compiles(t.Field0)
-        else:
-          return true
-      return false
+proc isNamedTuple(T: typedesc): bool {.magic: "TypeTrait".}
 
 template tupleObjectDollar*[T: tuple | object](result: var string, x: T) =
   result = "("