diff --git a/common/nextpnr.cc b/common/nextpnr.cc
index fc70465c..880e0344 100644
--- a/common/nextpnr.cc
+++ b/common/nextpnr.cc
@@ -355,11 +355,6 @@ WireId Context::getNetinfoSourceWire(const NetInfo *net_info) const
         return WireId();
 
     IdString driver_port = net_info->driver.port;
-
-    auto driver_port_it = net_info->driver.cell->pins.find(driver_port);
-    if (driver_port_it != net_info->driver.cell->pins.end())
-        driver_port = driver_port_it->second;
-
     return getBelPinWire(src_bel, driver_port);
 }
 
@@ -371,12 +366,6 @@ WireId Context::getNetinfoSinkWire(const NetInfo *net_info, const PortRef &user_
         return WireId();
 
     IdString user_port = user_info.port;
-
-    auto user_port_it = user_info.cell->pins.find(user_port);
-
-    if (user_port_it != user_info.cell->pins.end())
-        user_port = user_port_it->second;
-
     return getBelPinWire(dst_bel, user_port);
 }
 
@@ -516,15 +505,6 @@ uint32_t Context::checksum() const
         x = xorshift32(x + xorshift32(getBelChecksum(ci.bel)));
         x = xorshift32(x + xorshift32(ci.belStrength));
 
-        uint32_t pin_x_sum = 0;
-        for (auto &a : ci.pins) {
-            uint32_t pin_x = 123456789;
-            pin_x = xorshift32(pin_x + xorshift32(a.first.index));
-            pin_x = xorshift32(pin_x + xorshift32(a.second.index));
-            pin_x_sum += pin_x;
-        }
-        x = xorshift32(x + xorshift32(pin_x_sum));
-
         cksum_cells_sum += x;
     }
     cksum = xorshift32(cksum + xorshift32(cksum_cells_sum));
diff --git a/common/nextpnr.h b/common/nextpnr.h
index 12462698..c43b9dc4 100644
--- a/common/nextpnr.h
+++ b/common/nextpnr.h
@@ -605,9 +605,6 @@ struct CellInfo : ArchCellInfo
     BelId bel;
     PlaceStrength belStrength = STRENGTH_NONE;
 
-    // cell_port -> bel_pin
-    std::unordered_map<IdString, IdString> pins;
-
     // placement constraints
     CellInfo *constr_parent = nullptr;
     std::vector<CellInfo *> constr_children;
diff --git a/common/pybindings.cc b/common/pybindings.cc
index aacc8d9c..a72da78e 100644
--- a/common/pybindings.cc
+++ b/common/pybindings.cc
@@ -167,8 +167,6 @@ PYBIND11_EMBEDDED_MODULE(MODULE_NAME, m)
                       conv_from_str<BelId>>::def_wrap(ci_cls, "bel");
     readwrite_wrapper<CellInfo &, decltype(&CellInfo::belStrength), &CellInfo::belStrength, pass_through<PlaceStrength>,
                       pass_through<PlaceStrength>>::def_wrap(ci_cls, "belStrength");
-    readonly_wrapper<CellInfo &, decltype(&CellInfo::pins), &CellInfo::pins, wrap_context<IdIdMap &>>::def_wrap(ci_cls,
-                                                                                                                "pins");
 
     fn_wrapper_1a_v<CellInfo &, decltype(&CellInfo::addInput), &CellInfo::addInput, conv_from_str<IdString>>::def_wrap(
             ci_cls, "addInput");
diff --git a/gui/designwidget.cc b/gui/designwidget.cc
index 5c3584d9..5e6098a5 100644
--- a/gui/designwidget.cc
+++ b/gui/designwidget.cc
@@ -819,18 +819,6 @@ void DesignWidget::onSelectionChanged(int num, const QItemSelection &, const QIt
             addProperty(cellParamsItem, QVariant::String, item.first.c_str(ctx),
                         item.second.is_string ? item.second.as_string().c_str() : item.second.to_string().c_str());
         }
-
-        QtProperty *cellPinsItem = groupManager->addProperty("Pins");
-        topItem->addSubProperty(cellPinsItem);
-        for (auto &item : cell->pins) {
-            std::string cell_port = item.first.c_str(ctx);
-            std::string bel_pin = item.second.c_str(ctx);
-
-            QtProperty *pinGroupItem = addSubGroup(cellPortsItem, (cell_port + " -> " + bel_pin).c_str());
-
-            addProperty(pinGroupItem, QVariant::String, "Cell", cell_port.c_str(), ElementType::CELL);
-            addProperty(pinGroupItem, QVariant::String, "Bel", bel_pin.c_str(), ElementType::BEL);
-        }
     }
 }