vmconfig: remove path (use paths always)

Fixes: 190503456
Test: MicrodroidHostTestCases
Change-Id: I083eaacf5057337334467713ab3f8d12813491e2
diff --git a/vmconfig/src/lib.rs b/vmconfig/src/lib.rs
index e5c8e1b..7b0d2a5 100644
--- a/vmconfig/src/lib.rs
+++ b/vmconfig/src/lib.rs
@@ -121,9 +121,6 @@
     pub label: String,
     /// The filename of the partition image.
     #[serde(default)]
-    pub path: Option<PathBuf>,
-    /// The filename of the partition image.
-    #[serde(default)]
     pub paths: Vec<PathBuf>,
     /// Whether the partition should be writable.
     #[serde(default)]
@@ -132,26 +129,15 @@
 
 impl Partition {
     fn to_parcelable(&self) -> Result<AidlPartition> {
-        if !self.paths.is_empty() {
-            if self.path.is_some() {
-                bail!("Partition {} contains both path/paths", &self.label);
-            }
-            let images = self
-                .paths
-                .iter()
-                .map(|path| open_parcel_file(&path, self.writable))
-                .collect::<Result<Vec<_>, _>>()?;
-            Ok(AidlPartition { images, writable: self.writable, label: self.label.to_owned() })
-        } else {
-            let path = self.path.as_ref().ok_or_else(|| {
-                Error::msg(format!("Partition {} doesn't set path/paths", &self.label))
-            })?;
-            Ok(AidlPartition {
-                images: vec![open_parcel_file(&path, self.writable)?],
-                writable: self.writable,
-                label: self.label.to_owned(),
-            })
+        if self.paths.is_empty() {
+            bail!("Partition {} contains no paths", &self.label);
         }
+        let images = self
+            .paths
+            .iter()
+            .map(|path| open_parcel_file(&path, self.writable))
+            .collect::<Result<Vec<_>, _>>()?;
+        Ok(AidlPartition { images, writable: self.writable, label: self.label.to_owned() })
     }
 }