[NFC] Removing unused MLIR context (#4964)

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Author: vguerra

bin/triton-lsp.cpp

@@ -6,6 +6,5 @@ int main(int argc, char **argv) {
   mlir::DialectRegistry registry;
   registerTritonDialects(registry);
 
-  mlir::MLIRContext context(registry);
   return mlir::failed(mlir::MlirLspServerMain(argc, argv, registry));
 }