Import flash_mla from sgl-kernel (#12135)

scripts/ci/ci_install_dependency.sh

@@ -3,7 +3,6 @@
 set -euxo pipefail
 
 IS_BLACKWELL=${IS_BLACKWELL:-0}
-RUN_DEEPSEEK_V32=${RUN_DEEPSEEK_V32:-0}
 CU_VERSION="cu129"
 
 if [ "$CU_VERSION" = "cu130" ]; then
@@ -113,22 +112,6 @@ if [ "$IS_BLACKWELL" != "1" ]; then
     $PIP_CMD install xformers --index-url https://download.pytorch.org/whl/${CU_VERSION} --no-deps $PIP_INSTALL_SUFFIX
 fi
 
-# Install dependencies for deepseek-v3.2
-if [ "$RUN_DEEPSEEK_V32" = "1" ]; then
-    # Install flashmla
-    FLASHMLA_COMMIT="1408756a88e52a25196b759eaf8db89d2b51b5a1"
-    FLASH_MLA_DISABLE_SM100="0"
-    if [ "$IS_BLACKWELL" != "1" ]; then
-        FLASH_MLA_DISABLE_SM100="1"
-    fi
-    git clone https://github.com/deepseek-ai/FlashMLA.git flash-mla
-    cd flash-mla
-    git checkout ${FLASHMLA_COMMIT}
-    git submodule update --init --recursive
-    FLASH_MLA_DISABLE_SM100=${FLASH_MLA_DISABLE_SM100} $PIP_CMD install -v . $PIP_INSTALL_SUFFIX --no-build-isolation
-    cd ..
-fi
-
 # Show current packages
 $PIP_CMD list
 python3 -c "import torch; print(torch.version.cuda)"