remove glide deps

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

vendor/github.com/opencontainers/runc/libcontainer/stacktrace/capture.go

@@ -1,27 +0,0 @@
-package stacktrace
-
-import "runtime"
-
-// Capture captures a stacktrace for the current calling go program
-//
-// skip is the number of frames to skip
-func Capture(userSkip int) Stacktrace {
-	var (
-		skip   = userSkip + 1 // add one for our own function
-		frames []Frame
-		prevPc uintptr
-	)
-	for i := skip; ; i++ {
-		pc, file, line, ok := runtime.Caller(i)
-		//detect if caller is repeated to avoid loop, gccgo
-		//currently runs  into a loop without this check
-		if !ok || pc == prevPc {
-			break
-		}
-		frames = append(frames, NewFrame(pc, file, line))
-		prevPc = pc
-	}
-	return Stacktrace{
-		Frames: frames,
-	}
-}