adn remove flag

Author: cyoung06

.github/workflows/build.yaml

@@ -25,7 +25,7 @@ jobs:
           - flag: -DCMAKE_CXX_FLAGS="-m64"
             binary: ./build/libdptsp.so
             upload_name: x64_libdptsp.so
-          - flag: -DCMAKE_CXX_FLAGS="-m64" -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++
+          - flag: -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++
             binary: ./build/libdptsp.so
             upload_name: aarch64_libdptsp.so
     runs-on: ubuntu-24.04