Remove redundant code for dropped Python versions

setup.py

@@ -111,9 +111,8 @@ def get_compiler_settings():
         # made the settings.
         # https://lectem.github.io/msvc/reverse-engineering/build/2019/01/21/MSVC-hidden-flags.html
 
-        if sys.hexversion >= 0x03050000:
-            settings['extra_compile_args'].append('/d2FH4-')
-            settings['extra_link_args'].append('/d2:-FH4-')
+        settings['extra_compile_args'].append('/d2FH4-')
+        settings['extra_link_args'].append('/d2:-FH4-')
 
         settings['libraries'].append('odbc32')
         settings['libraries'].append('advapi32')

src/decimal.cpp

@@ -50,24 +50,13 @@ bool InitializeDecimal() {
     if (!point)
         return false;
 
-#if PY_MAJOR_VERSION >= 3
     pDecimalPoint = PyUnicode_FromString(".");
-#else
-    pDecimalPoint = PyBytes_FromString(".");
-#endif
 
     if (!pDecimalPoint)
         return false;
 
-#if PY_MAJOR_VERSION >= 3
     if (!SetDecimalPoint(point))
         return false;
-#else
-    // In 2.7, we only support non-Unicode right now.
-    if (PyBytes_Check(point))
-        if (!SetDecimalPoint(point))
-            return false;
-#endif
 
     return true;
 }
@@ -106,11 +95,7 @@ bool SetDecimalPoint(PyObject* pNew)
         pLocaleDecimalEscaped = e.Detach();
     }
 
-#if PY_MAJOR_VERSION >= 3
     Object s(PyUnicode_FromFormat("[^0-9%U-]+", pLocaleDecimal));
-#else
-    Object s(PyBytes_FromFormat("[^0-9%s-]+", PyString_AsString(pLocaleDecimal)));
-#endif
     if (!s)
         return false;
 

src/pyodbcmodule.cpp

@@ -663,11 +663,7 @@ static PyObject* mod_setdecimalsep(PyObject* self, PyObject* args)
 {
     UNUSED(self);
 
-#if PY_MAJOR_VERSION >= 3
     const char* type = "U";
-#else
-    const char* type = "S";
-#endif
 
     PyObject* p;
     if (!PyArg_ParseTuple(args, type, &p))