RUST-2147 Update float32 vector test and remove special casing (#523)

Author: abr-egn

src/tests/spec/json/bson-binary-vector/float32.json

@@ -32,7 +32,7 @@
     {
       "description": "Infinity Vector FLOAT32",
       "valid": true,
-      "vector": ["-inf", 0.0, "inf"],
+      "vector": [{"$numberDouble": "-Infinity"}, 0.0, {"$numberDouble": "Infinity"} ],
       "dtype_hex": "0x27",
       "dtype_alias": "FLOAT32",
       "padding": 0,

src/tests/spec/vector.rs

@@ -49,40 +49,13 @@ where
     u8::from_str_radix(s.trim_start_matches("0x"), 16).map_err(serde::de::Error::custom)
 }
 
+#[derive(Deserialize)]
+#[serde(untagged)]
 enum Number {
     Int(i16),
     Float(f32),
 }
 
-impl<'de> Deserialize<'de> for Number {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        #[derive(Deserialize)]
-        #[serde(untagged)]
-        enum NumberHelper {
-            Int(i16),
-            Float(f32),
-            String(String),
-        }
-
-        let helper = NumberHelper::deserialize(deserializer)?;
-        match helper {
-            NumberHelper::Int(n) => Ok(Self::Int(n)),
-            NumberHelper::Float(n) => Ok(Self::Float(n)),
-            NumberHelper::String(s) => match s.as_str() {
-                "inf" => Ok(Self::Float(f32::INFINITY)),
-                "-inf" => Ok(Self::Float(f32::NEG_INFINITY)),
-                other => Err(serde::de::Error::custom(format!(
-                    "unsupported number value {}",
-                    other
-                ))),
-            },
-        }
-    }
-}
-
 // Some of the invalid cases (e.g. mixed number types, padding for non-packed-bit vectors) are
 // impossible to construct, so we return an error from this method.
 fn vector_from_numbers(