Remove redundant includes of headers that are already included by Python.h.

Modules/_datetimemodule.c

@@ -3,7 +3,6 @@
  */
 
 #include "Python.h"
-#include "modsupport.h"
 #include "structmember.h"
 
 #include <time.h>

Modules/_lsprof.c

@@ -1,5 +1,4 @@
 #include "Python.h"
-#include "compile.h"
 #include "frameobject.h"
 #include "rotatingtree.h"
 

Modules/main.c

@@ -2,7 +2,6 @@
 
 #include "Python.h"
 #include "osdefs.h"
-#include "import.h"
 
 #include <locale.h>
 

Modules/parsermodule.c

@@ -34,10 +34,8 @@
 #include "grammar.h"
 #include "parsetok.h"
                                         /* ISTERMINAL() / ISNONTERMINAL() */
-#include "compile.h"
 #undef Yield
 #include "ast.h"
-#include "pyarena.h"
 
 extern grammar _PyParser_Grammar; /* From graminit.c */
 

Modules/signalmodule.c

@@ -4,7 +4,6 @@
 /* XXX Signals should be recorded per thread, now we have thread state. */
 
 #include "Python.h"
-#include "intrcheck.h"
 
 #ifdef MS_WINDOWS
 #include <Windows.h>

Modules/symtablemodule.c

@@ -1,7 +1,6 @@
 #include "Python.h"
 
 #include "code.h"
-#include "compile.h"
 #include "Python-ast.h"
 #include "symtable.h"