Update to Rust 1.51.0 and remove 1.47.0

Signed-off-by: Khem Raj <raj.khem@gmail.com>

recipes-devtools/cargo/cargo-1.51.0/0001-Disable-http2.patch

@@ -1,4 +1,4 @@
-From 40802c3a42fab9cfcd27fda8d00e98f8cc30016a Mon Sep 17 00:00:00 2001
+From 9844e63845da6cdafa485ad1ad3c99eaaa80312d Mon Sep 17 00:00:00 2001
 From: Johan Anderholm <johan.anderholm@gmail.com>
 Date: Sun, 27 Jan 2019 10:19:00 +0100
 Subject: [PATCH] Disable http2
@@ -14,18 +14,15 @@ Upstream-Status: Inappropriate
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/Cargo.toml b/Cargo.toml
-index 95cea90c4..56211532f 100644
+index 8a144a4..c4f856e 100644
 --- a/Cargo.toml
 +++ b/Cargo.toml
 @@ -25,7 +25,7 @@ cargo-platform = { path = "crates/cargo-platform", version = "0.1.1" }
- crates-io = { path = "crates/crates-io", version = "0.31.1" }
- crossbeam-utils = "0.7"
+ crates-io = { path = "crates/crates-io", version = "0.33.0" }
+ crossbeam-utils = "0.8"
  crypto-hash = "0.3.1"
 -curl = { version = "0.4.23", features = ["http2"] }
 +curl = { version = "0.4.23" }
  curl-sys = "0.4.22"
- env_logger = "0.7.0"
+ env_logger = "0.8.1"
  pretty_env_logger = { version = "0.4", optional = true }
--- 
-2.28.0
-