Remove stale info and fix superscript numbering

This amends 1e06b82

(cherry picked from commit 80e80fa)

Author: AaronBallman

llvm/docs/GettingStarted.rst

@@ -281,16 +281,13 @@ uses the package and provides other details.
 Package                                                     Version      Notes
 =========================================================== ============ ==========================================
 `CMake <http://cmake.org/>`__                               >=3.20.0     Makefile/workspace generator
-`python <http://www.python.org/>`_                          >=3.6        Automated test suite\ :sup:`2`
-`zlib <http://zlib.net>`_                                   >=1.2.3.4    Compression library\ :sup:`3`
-`GNU Make <http://savannah.gnu.org/projects/make>`_         3.79, 3.79.1 Makefile/build processor\ :sup:`4`
+`python <http://www.python.org/>`_                          >=3.6        Automated test suite\ :sup:`1`
+`zlib <http://zlib.net>`_                                   >=1.2.3.4    Compression library\ :sup:`2`
+`GNU Make <http://savannah.gnu.org/projects/make>`_         3.79, 3.79.1 Makefile/build processor\ :sup:`3`
 =========================================================== ============ ==========================================
 
 .. note::
 
-   #. Only the C and C++ languages are needed so there's no need to build the
-      other languages for LLVM's purposes. See `below` for specific version
-      info.
    #. Only needed if you want to run the automated test suite in the
       ``llvm/test`` directory.
    #. Optional, adds compression / uncompression capabilities to selected LLVM