Upgrade to ROCm 7.0 and remove 6.2 API backport shims

The HIP patch already targets the ROCm 7 hipBLAS API (HIPBLAS_COMPUTE_*,
hipDataType, HIP_R_*). The sed block was explicitly downgrading those to
the deprecated ROCm 6.2 equivalents; removing it lets the patch build
natively against ROCm 7.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -1,4 +1,4 @@
-ARG ROCM_VERSION=6.2
+ARG ROCM_VERSION=7.0
 ARG GPU_ARCH="gfx1030;gfx1031"
 ARG ONEDNN_VERSION=3.1.1
 
@@ -40,20 +40,6 @@ RUN git clone --branch v4.0.0 --depth 1 \
     cd /build/CTranslate2 && \
     git submodule update --init --recursive && \
     git apply /tmp/ct2_4.0.0_rocm.patch && \
-    sed -i \
-        -e 's/hipDataType/hipblasDatatype_t/g' \
-        -e 's/hipblasComputeType_t/hipblasDatatype_t/g' \
-        -e 's/HIP_R_16F/HIPBLAS_R_16F/g' \
-        -e 's/HIP_R_32F/HIPBLAS_R_32F/g' \
-        -e 's/HIP_R_16BF/HIPBLAS_R_16B/g' \
-        -e 's/HIP_R_32I/HIPBLAS_R_32I/g' \
-        -e 's/HIP_R_8I/HIPBLAS_R_8I/g' \
-        -e 's/HIPBLAS_COMPUTE_16F/HIPBLAS_R_16F/g' \
-        -e 's/HIPBLAS_COMPUTE_32F_FAST_16BF/HIPBLAS_R_32F/g' \
-        -e 's/HIPBLAS_COMPUTE_32F_FAST_16F/HIPBLAS_R_32F/g' \
-        -e 's/HIPBLAS_COMPUTE_32F/HIPBLAS_R_32F/g' \
-        -e 's/HIPBLAS_COMPUTE_32I/HIPBLAS_R_32I/g' \
-        src/cuda2hip_macros.hpp && \
     mkdir build && cd build && \
     cmake -DCMAKE_INSTALL_PREFIX=${CTRANSLATE2_ROOT} \
           -DCMAKE_PREFIX_PATH=/opt/rocm \