Remove stale deprecated warning suppressions in strconv doc examples

The parse_* functions are deprecated with skip_current_package=true, so in-package doc examples never triggered the deprecation warning.

Co-Authored-By: SeekMoon <noreply@moonbitlang.cn>

Author: bobzhang

strconv/README.mbt.md

@@ -10,7 +10,6 @@ Parse integers in various bases:
 
 ```mbt check
 ///|
-#warnings("-deprecated")
 test "parse_int" {
   inspect(@strconv.parse_int("42"), content="42")
   inspect(@strconv.parse_int("101", base=2), content="5")
@@ -22,7 +21,6 @@ Parse 64-bit integers and unsigned integers:
 
 ```mbt check
 ///|
-#warnings("-deprecated")
 test "parse_int64_uint" {
   inspect(
     @strconv.parse_int64("9223372036854775807"),
@@ -40,7 +38,6 @@ test "parse_int64_uint" {
 
 ```mbt check
 ///|
-#warnings("-deprecated")
 test "parse_other" {
   inspect(@strconv.parse_bool("true"), content="true")
   inspect(@strconv.parse_double("3.14"), content="3.14")
@@ -54,7 +51,6 @@ Use `@string.from_str` in new code.
 
 ```mbt check
 ///|
-#warnings("-deprecated")
 test "from_str" {
   let i : Int = @strconv.from_str("123")
   inspect(i, content="123")
@@ -75,7 +71,6 @@ Use the `@string` versions in new code.
 
 ```mbt check
 ///|
-#warnings("-deprecated")
 test "error_handling" {
   let result : Result[Int, _] = try? @strconv.parse_int("abc")
   inspect(result is Err(_), content="true")

strconv/double.mbt

@@ -57,7 +57,6 @@ let max_mantissa_fast_path : UInt64 = 2UL << mantissa_explicit_bits
 ///
 /// Examples:
 /// ```mbt check
-/// #warnings("-deprecated")
 /// test {
 ///   inspect(@strconv.parse_double("123"), content="123")
 ///   inspect(@strconv.parse_double("12.34"), content="12.34")

strconv/int.mbt

@@ -70,7 +70,6 @@ test {
 /// These underscores do not affect the value.
 /// Examples:
 /// ```mbt check
-/// #warnings("-deprecated")
 /// test {
 ///   inspect(@strconv.parse_int64("123"), content="123")
 ///   inspect(@strconv.parse_int64("0xff", base=0), content="255")

strconv/uint.mbt

@@ -30,7 +30,6 @@ const UINT64_MAX : UInt64 = 0xffffffffffffffffUL
 /// These underscores do not affect the value.
 /// Examples:
 /// ```mbt check
-/// #warnings("-deprecated")
 /// test {
 ///   inspect(@strconv.parse_uint64("123"), content="123")
 ///   inspect(@strconv.parse_uint64("0xff", base=0), content="255")