Deprecate portable feature in mithril-stm and mithril-client

Author: Alenar

mithril-client/Cargo.toml

@@ -76,7 +76,7 @@ full = ["fs"]
 
 # Enable file system releated functionnality, right now that mean ony snapshot download
 fs = ["flate2", "flume", "tar", "tokio/rt", "zstd"]
-portable = ["mithril-common/portable"]
+portable = [] # deprecated, will be removed soon
 unstable = []
 
 [package.metadata.docs.rs]

mithril-stm/Cargo.toml

@@ -54,7 +54,5 @@ harness = false
 default = ["rug-backend"]
 rug-backend = ["rug/default"]
 num-integer-backend = ["num-bigint", "num-rational", "num-traits"]
-portable = [
-    "blst/portable",
-] # portable feature avoids SIGILL crashes on CPUs not supporting Intel ADX instruction set when built on CPUs that support it
+portable = [] # deprecated, will be removed soon
 benchmark-internals = [] # For benchmarking multi_sig