Remove empty function `trigShutDown`

git-svn-id: https://warzone2100.svn.sourceforge.net/svnroot/warzone2100/trunk@11709 4a71c877-e1ca-e34f-864e-861f7616d084

lib/framework/frame.c

@@ -305,9 +305,6 @@ void frameShutDown(void)
 	/* Destroy the Application window */
 	SDL_Quit();
 
-	/* shutdown the trig stuff */
-	trigShutDown();
-
 	// Shutdown the resource stuff
 	resShutDown();
 }

lib/framework/trig.c

@@ -83,12 +83,6 @@ bool trigInitialise(void)
 	return true;
 }
 
-
-/* Shutdown the trig tables */
-void trigShutDown(void)
-{}
-
-
 int32_t iSin(uint16_t a)
 {
 	int sign[4] = {1, 1, -1, -1};

lib/framework/trig.h

@@ -40,9 +40,6 @@ extern "C"
 /* Initialise the Trig tables */
 extern bool trigInitialise(void);
 
-/* Shutdown the trig tables */
-extern void trigShutDown(void);
-
 // Deterministic trig functions.
 int32_t iSin(uint16_t a);               ///< Returns sin(a*2π >> 16) << 16, rounded to nearest integer. Used as the x component in this game.
 int32_t iCos(uint16_t a);               ///< Returns cos(a*2π >> 16) << 16, rounded to nearest integer. Used as the y component in this game.