small cleanups

lib/pure/streams.nim

@@ -180,9 +180,7 @@ proc readLine*(s: PStream): TaintedString =
     if c == '\c': 
       c = readChar(s)
       break
-    if c == '\b':
-      result.string.setLen(result.len - 1)
-    elif c == '\L' or c == '\0':
+    if c == '\L' or c == '\0':
       break
     else:
       result.string.add(c)

lib/system.nim

@@ -186,9 +186,9 @@ when not defined(niminheritable):
 
 when not defined(JS) and not defined(NimrodVM):
   type
-    TGenericSeq* {.compilerproc, pure, inheritable.} = object
+    TGenericSeq {.compilerproc, pure, inheritable.} = object
       len, reserved: int
-    PGenericSeq* {.exportc.} = ptr TGenericSeq
+    PGenericSeq {.exportc.} = ptr TGenericSeq
     # len and space without counting the terminating zero:
     NimStringDesc {.compilerproc, final.} = object of TGenericSeq
       data: array[0..100_000_000, char]