Remove taint-tracking for objects that implement io.Reader

Author: gagliardetto

ql/src/semmle/go/frameworks/stdlib/Bufio.qll

@@ -69,10 +69,6 @@ module Bufio {
       this.(Method).hasQualifiedName("bufio", "Reader", "Peek") and
       (inp.isReceiver() and outp.isResult(0))
       or
-      // signature: func (*Reader).Read(p []byte) (n int, err error)
-      this.(Method).hasQualifiedName("bufio", "Reader", "Read") and
-      (inp.isReceiver() and outp.isParameter(0))
-      or
       // signature: func (*Reader).ReadByte() (byte, error)
       this.(Method).hasQualifiedName("bufio", "Reader", "ReadByte") and
       (inp.isReceiver() and outp.isResult(0))

ql/src/semmle/go/frameworks/stdlib/Bytes.qll

@@ -159,10 +159,6 @@ module Bytes {
       this.(Method).hasQualifiedName("bytes", "Buffer", "Next") and
       (inp.isReceiver() and outp.isResult())
       or
-      // signature: func (*Buffer).Read(p []byte) (n int, err error)
-      this.(Method).hasQualifiedName("bytes", "Buffer", "Read") and
-      (inp.isReceiver() and outp.isParameter(0))
-      or
       // signature: func (*Buffer).ReadByte() (byte, error)
       this.(Method).hasQualifiedName("bytes", "Buffer", "ReadByte") and
       (inp.isReceiver() and outp.isResult(0))
@@ -207,10 +203,6 @@ module Bytes {
       this.(Method).hasQualifiedName("bytes", "Buffer", "WriteTo") and
       (inp.isReceiver() and outp.isParameter(0))
       or
-      // signature: func (*Reader).Read(b []byte) (n int, err error)
-      this.(Method).hasQualifiedName("bytes", "Reader", "Read") and
-      (inp.isReceiver() and outp.isParameter(0))
-      or
       // signature: func (*Reader).ReadAt(b []byte, off int64) (n int, err error)
       this.(Method).hasQualifiedName("bytes", "Reader", "ReadAt") and
       (inp.isReceiver() and outp.isParameter(0))