Even the wires strung between the upper and lower wings of older biplanes produced considerable pressure drag. Today aircraft are shaped to minimize drag. The fuselages of airliners, the supporting struts on aerobatic biplanes, the enclosures surrounding fixed landing gear, and other exposed surfaces are all streamlined.
BUT, keep in mind...
Streamlining Increases Friction Drag
The more you streamline an object by elongating its rear surface, the more you reduce the size of its wake and the resulting pressure drag. But elongating an object increases its surface area, and that increases the effects of friction—another form of drag!
Making the most of streamlining requires a trade-off. An object must be tapered enough to reduce the size of its wake. But it must also be short enough so the accompanying increase in friction drag doesn’t offset the lower pressure drag.