lang: Remove the interface-instructions feature

Author: acheroncrypto

lang/Cargo.toml

@@ -38,7 +38,6 @@ idl-build = [
     "anchor-lang-idl/build",
 ]
 init-if-needed = ["anchor-derive-accounts/init-if-needed"]
-interface-instructions = ["anchor-attribute-program/interface-instructions"]
 lazy-account = [
     "anchor-attribute-account/lazy-account",
     "anchor-derive-serde/lazy-account",

lang/attribute/program/Cargo.toml

@@ -13,7 +13,6 @@ proc-macro = true
 [features]
 anchor-debug = ["anchor-syn/anchor-debug"]
 idl-build = ["anchor-syn/idl-build"]
-interface-instructions = ["anchor-syn/interface-instructions"]
 
 [dependencies]
 anchor-lang-idl = { path = "../../../idl", version = "0.1.2", features = ["convert"] }

lang/syn/Cargo.toml

@@ -18,7 +18,6 @@ event-cpi = []
 hash = []
 idl-build = ["cargo_toml"]
 init-if-needed = []
-interface-instructions = []
 
 [dependencies]
 anyhow = "1"