Fix PyPy by eliminating deprecated library detection code

PyPy fails when handled here as a special case. For example, the correct value for libname may be "pypy3.9-c" and can be inferred from LDLIBRARY, but setting it to "pypy3-c" leads to failure with `ld: cannot find -lpypy3-c: No such file or directory`.

Fix PyPy by eliminating deprecated library detection code
4d365f68 · Ben Mares · Thomas Wiecki · 4ee35881 · 4d365f68
--- a/pytensor/link/c/cmodule.py
+++ b/pytensor/link/c/cmodule.py
@@ -1750,13 +1750,6 @@ def std_lib_dirs_and_libs() -> Optional[tuple[list[str], ...]]:
    # makes it unnecessary.
    elif sys.platform == "darwin":
        std_lib_dirs_and_libs.data = [], []
-    else:
-        if platform.python_implementation() == "PyPy":
-            # Assume Linux (note: Ubuntu doesn't ship this .so)
-            libname = "pypy3-c"
-            # Unfortunately the only convention of this .so is that it appears
-            # next to the location of the interpreter binary.
-            libdir = os.path.dirname(os.path.realpath(sys.executable))
    else:
        # Assume Linux
        # Typical include directory: /usr/include/python2.6