Removed explicit SDK.

Author: SDGGiesbrecht

.github/workflows/Android.yaml

@@ -72,7 +72,6 @@ jobs:
           --triple x86_64-unknown-linux-android \
           --sdk /Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk \
           --toolchain /Library/Developer/Toolchains/unknown-Asserts-development.xctoolchain \
-          -Xswiftc -sdk -Xswiftc /Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk \
           -Xswiftc -resource-dir -Xswiftc /Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk/usr/lib/swift \
           -Xswiftc -tools-directory -Xswiftc ${ANDROID_HOME}/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin \
           -Xswiftc -Xclang-linker -Xswiftc --gcc-toolchain=${ANDROID_HOME}/ndk-bundle/toolchains/x86_64-4.9/prebuilt/linux-x86_64 \