Clean up trailing whitespace in the kernel headers.

And fix the scripts so they stop letting trailing whitespace through.

Change-Id: Ie109fbe1f63321e565ba0fa60fee8e9cf3a61cfc

libc/tools/bionic_utils.py

@@ -302,17 +302,6 @@ class SysCallsTxtParser:
         fp.close()
 
 
-class Output:
-    def  __init__(self,out=sys.stdout):
-        self.out = out
-
-    def write(self,msg):
-        self.out.write(msg)
-
-    def writeln(self,msg):
-        self.out.write(msg)
-        self.out.write("\n")
-
 class StringOutput:
     def __init__(self):
         self.line = ""
@@ -321,10 +310,6 @@ class StringOutput:
         self.line += msg
         D2("write '%s'" % msg)
 
-    def writeln(self,msg):
-        self.line += msg + '\n'
-        D2("write '%s\\n'"% msg)
-
     def get(self):
         return self.line