Fixed bug regarding creating textures without initial data

ext/cgt/texture.cpp

@@ -46,7 +46,6 @@ Texture::Texture(GLenum type, const cgt::ivec3& dimensions, GLint internalFormat
     , bpp_(0)
 {
     init();
-    uploadTexture(nullptr, calcMatchingPixelFormat(internalFormat), calcMatchingPixelDataType(internalFormat));
 }
 
 Texture::Texture(GLenum type, const cgt::ivec3& dimensions, GLint internalFormat, GLubyte* data, GLint format, GLenum dataType, Filter filter /*= LINEAR*/)