update README file

Author: AmintorDusko

README.rst

@@ -241,7 +241,6 @@ Then the `cuStateVec`_ library can be installed and set a ``CUQUANTUM_SDK`` envi
 
 .. code-block:: console
 
-    python -m pip install wheel custatevec-cu12
     export CUQUANTUM_SDK=$(python -c "import site; print( f'{site.getsitepackages()[0]}/cuquantum')")
 
 The Lightning-GPU can then be installed with ``pip``:
@@ -382,7 +381,6 @@ Then the `cutensornet`_ library can be installed and set a ``CUQUANTUM_SDK`` env
 
 .. code-block:: console
 
-    pip install cutensornet-cu12
     export CUQUANTUM_SDK=$(python -c "import site; print( f'{site.getsitepackages()[0]}/cuquantum')")
 
 The Lightning-Tensor can then be installed with ``pip``: