Revert "test cases for the new features"

This reverts commit 66653e8f14.

tests/compile/tgenericdefaults.nim

@@ -1,29 +0,0 @@
-type 
-  TFoo[T, U, R = int] = object
-    x: T
-    y: U
-    z: R
-
-  TBar[T] = TFoo[T, array[4, T], T]
-
-var x1: TFoo[int, float]
-
-static:
-  assert type(x1.x) is int
-  assert type(x1.y) is float
-  assert type(x1.z) is int
-  
-var x2: TFoo[string, R = float, U = seq[int]]
-
-static:
-  assert type(x2.x) is string
-  assert type(x2.y) is seq[int]
-  assert type(x2.z) is float
-
-var x3: TBar[float]
-
-static:
-  assert type(x3.x) is float
-  assert type(x3.y) is array[4, float]
-  assert type(x3.z) is float
-

tests/compile/ttypeclasses.nim

@@ -5,8 +5,6 @@ type
   T1 = expr
   T2 = expr
 
-  Numeric = int|float
-
 proc takesExpr(x, y) =
   echo x, y
 
@@ -34,22 +32,3 @@ takesFoo(f, f)
 takes2Types(1, 1, "string")
 takes2Types[string, int]("test", "test", 1)
 
-proc takesSeq(x: seq) =
-  echo "seq"
-
-takesSeq(@[1, 2, 3])
-takesSeq(@["x", "y", "z"])
-
-proc takesSeqOfFoos(x: seq[TFoo]) =
-  echo "foo seq"
-
-var sf = newSeq[TFoo[int]](3)
-
-takesSeq(sf)
-takesSeqOfFoos(sf)
-
-proc takesFooOfNumeric(x: TFoo[Numeric]) =
-  echo "foo of numeric"
-
-takesFooOfNumeric(sf[0])
-

tests/run/tstaticparams.nim

@@ -1,17 +0,0 @@
-discard """
-  file: "tstaticparams.nim"
-  output: "abracadabra\ntest"
-"""
-
-type 
-  TFoo[T; Val: expr[string]] = object
-    data: array[4, T]
-
-proc takeFoo(x: TFoo) =
-  echo "abracadabra"
-  echo TFoo.Val
-
-var x: TFoo[int, "test"]
-
-takeFoo(x)
-