Remove cs2dumper files

These files don't need to be in the repository, as they are automatically downloaded when building.

build.rs

@@ -8,7 +8,7 @@ fn download(url: &str, to: &str) -> Result<(), Box<dyn Error>> {
         .expect("Convert response to text");
 
     std::fs::write(to, content)
-    .expect("Write offsets to file");
+    .expect("Write to file");
 
     Ok(())
 }
@@ -18,17 +18,17 @@ fn main() -> Result<(), Box<dyn Error>> {
     download(
         "https://raw.githubusercontent.com/a2x/cs2-dumper/main/generated/client.dll.rs",
         "./src/sdk/cs2dumper/client.rs"
-    ).expect("Failed to download build file");
+    ).expect("Failed to download build file \"client.dll.rs\"");
 
     download(
         "https://raw.githubusercontent.com/a2x/cs2-dumper/main/generated/offsets.rs",
         "./src/sdk/cs2dumper/offsets.rs"
-    ).expect("Failed to download build file");
+    ).expect("Failed to download build file \"offsets.rs\"");
 
     download(
         "https://raw.githubusercontent.com/a2x/cs2-dumper/main/generated/engine2.dll.rs",
         "./src/sdk/cs2dumper/engine2.rs"
-    ).expect("Failed to download build file");
+    ).expect("Failed to download build file \"engine2.dll.rs\"");
 
     EmitBuilder::builder()
         .git_sha(true)