Delete vendored code and update CI to Go 1.13 (#158)

As the Go community transitions to using the modules ecosystem,
we want to only support one way of managing dependencies.
So this change moves to only using Go modules for dependency management.

This means that our effective minimum Go version increases to Go 1.11.
To account for this, we also update:
  - the documentation
  - Makefile
  - CI scripts

1 files changed, 0 insertions, 50 deletions

diff --git a/vendor/golang.org/x/sys/unix/zptracemipsle_linux.go b/vendor/golang.org/x/sys/unix/zptracemipsle_linux.go
deleted file mode 100644
index dc3d6d3..0000000
--- a/vendor/golang.org/x/sys/unix/zptracemipsle_linux.go
+++ /dev/null
@@ -1,50 +0,0 @@
-// Code generated by linux/mkall.go generatePtracePair(mipsle, mips64le). DO NOT EDIT.
-
-// +build linux
-// +build mipsle mips64le
-
-package unix
-
-import "unsafe"
-
-// PtraceRegsMipsle is the registers used by mipsle binaries.
-type PtraceRegsMipsle struct {
-	Regs     [32]uint64
-	Lo       uint64
-	Hi       uint64
-	Epc      uint64
-	Badvaddr uint64
-	Status   uint64
-	Cause    uint64
-}
-
-// PtraceGetRegsMipsle fetches the registers used by mipsle binaries.
-func PtraceGetRegsMipsle(pid int, regsout *PtraceRegsMipsle) error {
-	return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
-}
-
-// PtraceSetRegsMipsle sets the registers used by mipsle binaries.
-func PtraceSetRegsMipsle(pid int, regs *PtraceRegsMipsle) error {
-	return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
-}
-
-// PtraceRegsMips64le is the registers used by mips64le binaries.
-type PtraceRegsMips64le struct {
-	Regs     [32]uint64
-	Lo       uint64
-	Hi       uint64
-	Epc      uint64
-	Badvaddr uint64
-	Status   uint64
-	Cause    uint64
-}
-
-// PtraceGetRegsMips64le fetches the registers used by mips64le binaries.
-func PtraceGetRegsMips64le(pid int, regsout *PtraceRegsMips64le) error {
-	return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
-}
-
-// PtraceSetRegsMips64le sets the registers used by mips64le binaries.
-func PtraceSetRegsMips64le(pid int, regs *PtraceRegsMips64le) error {
-	return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
-}