Remove nodestore dependency on Snappy

src/ripple/nodestore/impl/codec.h

@@ -29,7 +29,6 @@
 #include <ripple/nodestore/NodeObject.h>
 #include <ripple/protocol/HashPrefix.h>
 #include <lz4/lib/lz4.h>
-#include <snappy.h>
 #include <cstddef>
 #include <cstring>
 #include <string>
@@ -38,44 +37,6 @@
 namespace ripple {
 namespace NodeStore {
 
-template <class BufferFactory>
-std::pair<void const*, std::size_t>
-snappy_compress (void const* in,
-    std::size_t in_size, BufferFactory&& bf)
-{
-    std::pair<void const*, std::size_t> result;
-    auto const out_max =
-        snappy::MaxCompressedLength(in_size);
-    void* const out = bf(out_max);
-    result.first = out;
-    snappy::RawCompress(
-        reinterpret_cast<char const*>(in),
-            in_size, reinterpret_cast<char*>(out),
-                &result.second);
-    return result;
-}
-
-template <class BufferFactory>
-std::pair<void const*, std::size_t>
-snappy_decompress (void const* in,
-    std::size_t in_size, BufferFactory&& bf)
-{
-    std::pair<void const*, std::size_t> result;
-    if (! snappy::GetUncompressedLength(
-            reinterpret_cast<char const*>(in),
-                in_size, &result.second))
-        Throw<std::runtime_error> (
-            "snappy decompress: GetUncompressedLength");
-    void* const out = bf(result.second);
-    result.first = out;
-    if (! snappy::RawUncompress(
-        reinterpret_cast<char const*>(in), in_size,
-            reinterpret_cast<char*>(out)))
-        Throw<std::runtime_error> (
-            "snappy decompress: RawUncompress");
-    return result;
-}
-
 template <class BufferFactory>
 std::pair<void const*, std::size_t>
 lz4_decompress (void const* in,