Remove now useless SKIP_RTAUDIO_FALLBACK=true flag on CI builds

Signed-off-by: falkTX <falktx@falktx.com>

.github/workflows/build.yml

@@ -49,7 +49,7 @@ jobs:
         run: |
           pushd deps/PawPaw; source local.env linux-aarch64; popd
           make features
-          make NOOPT=true SKIP_RTAUDIO_FALLBACK=true WITH_LTO=true -j $(nproc)
+          make NOOPT=true WITH_LTO=true -j $(nproc)
           make unzipfx
       - name: Set sha8
         id: slug
@@ -98,7 +98,7 @@ jobs:
         run: |
           pushd deps/PawPaw; source local.env linux-armhf; popd
           make features
-          make NOOPT=true SKIP_RTAUDIO_FALLBACK=true WITH_LTO=true -j $(nproc)
+          make NOOPT=true WITH_LTO=true -j $(nproc)
           make unzipfx
       - name: Set sha8
         id: slug
@@ -143,7 +143,7 @@ jobs:
         run: |
           pushd deps/PawPaw; source local.env linux-i686; popd
           make features
-          make NOOPT=true SKIP_RTAUDIO_FALLBACK=true WITH_LTO=true -j $(nproc)
+          make NOOPT=true WITH_LTO=true -j $(nproc)
           make unzipfx
       - name: Set sha8
         id: slug
@@ -180,7 +180,7 @@ jobs:
         run: |
           pushd deps/PawPaw; source local.env linux; popd
           make features
-          make NOOPT=true SKIP_RTAUDIO_FALLBACK=true WITH_LTO=true -j $(nproc)
+          make NOOPT=true WITH_LTO=true -j $(nproc)
           make unzipfx
       - name: Set sha8
         id: slug