Remove advice on bad Python linking

This is pathological and something that should be fixed in core, not by
working around it.

Closes https://github.com/Homebrew/legacy-homebrew/pull/45704.

share/doc/homebrew/Common-Issues.md

@@ -95,49 +95,6 @@ $ git clean -n # if this doesn't list anything that you want to keep, then
 $ git clean -f # this will remove untracked files
 ```
 
-### Python: `Segmentation fault: 11` on `import <some_python_module>`
-
-A `Segmentation fault: 11` is in many cases due to a different Python
-executable used for building the software vs. the python you use to import the
-module.  This can even happen when both python executables are the same version
-(e.g. 2.7.2). The explanation is that Python packages with C extensions (those
-that have `.so` files) are compiled against a certain python binary/library that
-may have been built with a different arch (e.g. Apple's python is still not a
-pure 64-bit build). Other things can go wrong, too. Welcome to the dirty
-underworld of C.
-
-To solve this, you should remove the problematic formula with those python
-bindings and all of its dependencies.
-
-  - `brew rm $(brew deps --installed <problematic_formula>)`
-  - `brew rm <problematic_formula>`
-  - Also check the `$(brew --prefix)/lib/python2.7/site-packages` directory and
-    delete all remains of the corresponding python modules if they were not
-    cleanly removed by the previous steps.
-  - Check that `which python` points to the python you want. Perhaps now is the
-    time to `brew install python`.
-  - Then reinstall `brew install <problematic_formula>`
-  - Now start `python` and try to `import` the module installed by the
-    \<problematic_formula\>
-
-You can basically use any Python (2.x) for the bindings homebrew provides, but
-you can't mix.  Homebrew formulae use a brewed Python if available or, if not
-so, they use whatever `python` is in your `PATH`.
-
-### Python: `Fatal Python error: PyThreadState_Get: no current thread`
-
-```
-Fatal Python error: PyThreadState_Get: no current thread
-Abort trap: 6
-```
-
-This happens for `boost-python`, `pygtk`, `pygobject`, and related modules,
-for the same reason as described above. To solve this, follow the steps above.
-
-If `boost` is your problem, note that Boost.Python is now provided by the
-`boost-python` formula. Removing any existing `boost` and `boost-python`,
-running `brew update`, and installing them anew should fix things.
-
 ### Python: easy-install.pth cannot be linked
 ```
 Warning: Could not link <formulaname>. Unlinking...