Don't use --export-table anymore

Because it was turned on by default in the recent nightlies.

See rust-lang/rust#53237

Author: pepyakin

substrate/executor/wasm/build.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -e
 
-RUSTFLAGS="-C link-arg=--export-table" cargo +nightly build --target=wasm32-unknown-unknown --release
+cargo +nightly build --target=wasm32-unknown-unknown --release
 for i in test
 do
 	wasm-gc target/wasm32-unknown-unknown/release/runtime_$i.wasm target/wasm32-unknown-unknown/release/runtime_$i.compact.wasm