Removed the vi format comments from the source

Vim users can use the [editorconfig plugin](https://github.com/editorconfig/editorconfig-vim) to automatically set tab spacing for the SDL coding style.

Fixes https://github.com/libsdl-org/SDL/issues/6903

src/test/SDL_test_assert.c

@@ -139,5 +139,3 @@ int SDLTest_AssertSummaryToTestResult()
         }
     }
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_common.c

@@ -2336,5 +2336,3 @@ void SDLTest_CommonDrawWindowInfo(SDL_Renderer *renderer, SDL_Window *window, in
         *usedHeight = textY;
     }
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_compare.c

@@ -111,5 +111,3 @@ int SDLTest_CompareSurfaces(SDL_Surface *surface, SDL_Surface *referenceSurface,
 
     return ret;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_crc32.c

@@ -158,5 +158,3 @@ int SDLTest_Crc32Done(SDLTest_Crc32Context *crcContext)
 
     return 0;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_font.c

@@ -3487,5 +3487,3 @@ void SDLTest_CleanupTextDrawing(void)
 
     SDLTest_CharTextureCacheList = NULL;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_fuzzer.c

@@ -500,5 +500,3 @@ SDLTest_RandomAsciiStringOfSize(int size)
 
     return string;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_harness.c

@@ -677,5 +677,3 @@ int SDLTest_RunSuites(SDLTest_TestSuiteReference *testSuites[], const char *user
     SDLTest_Log("Exit code: %d", runResult);
     return runResult;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_imageBlit.c

@@ -1654,5 +1654,3 @@ SDL_Surface *SDLTest_ImageBlitAlpha()
         SDLTest_imageBlitAlpha.width * SDLTest_imageBlitAlpha.bytes_per_pixel, SDL_PIXELFORMAT_RGB24);
     return surface;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_imageBlitBlend.c

@@ -2931,5 +2931,3 @@ SDL_Surface *SDLTest_ImageBlitBlendAll()
         SDLTest_imageBlitBlendAll.width * SDLTest_imageBlitBlendAll.bytes_per_pixel, SDL_PIXELFORMAT_RGB24);
     return surface;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_imageFace.c

@@ -231,5 +231,3 @@ SDL_Surface *SDLTest_ImageFace()
         SDL_PIXELFORMAT_RGBA32);
     return surface;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_imagePrimitives.c

@@ -511,5 +511,3 @@ SDL_Surface *SDLTest_ImagePrimitives()
         SDLTest_imagePrimitives.width * SDLTest_imagePrimitives.bytes_per_pixel, SDL_PIXELFORMAT_RGB24);
     return surface;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_imagePrimitivesBlend.c

@@ -684,5 +684,3 @@ SDL_Surface *SDLTest_ImagePrimitivesBlend()
         SDLTest_imagePrimitivesBlend.width * SDLTest_imagePrimitivesBlend.bytes_per_pixel, SDL_PIXELFORMAT_RGB24);
     return surface;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_log.c

@@ -111,5 +111,3 @@ void SDLTest_LogError(SDL_PRINTF_FORMAT_STRING const char *fmt, ...)
     /* Log with timestamp and newline */
     SDL_LogMessage(SDL_LOG_CATEGORY_TEST, SDL_LOG_PRIORITY_ERROR, "%s: %s", SDLTest_TimestampToString(time(0)), logMessage);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_md5.c

@@ -340,5 +340,3 @@ static void SDLTest_Md5Transform(MD5UINT4 *buf, const MD5UINT4 *in)
     buf[2] += c;
     buf[3] += d;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_memory.c

@@ -272,5 +272,3 @@ void SDLTest_LogAllocations()
 
     SDL_Log("%s", message);
 }
-
-/* vi: set ts=4 sw=4 expandtab: */

src/test/SDL_test_random.c

@@ -96,5 +96,3 @@ unsigned int SDLTest_Random(SDLTest_RandomContext *rndContext)
     }
     return rndContext->x;
 }
-
-/* vi: set ts=4 sw=4 expandtab: */