Revert "CMake: Pass STATIC types on cmake execution"

I have missed that this change was headed for 4.0 instead
of master. It breaks the build there.

This reverts commit 0043c721c2.

Change-Id: Ia359798c2636b2b4699de9cc73484ec12a757601
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/cmakeprojectmanager/builddirmanager.cpp

@@ -82,9 +82,6 @@ static QStringList toArguments(const CMakeConfig &config, const ProjectExplorer:
         case CMakeConfigItem::INTERNAL:
             a.append(QLatin1String(":INTERNAL="));
             break;
-        case CMakeConfigItem::STATIC:
-            a.append(QLatin1String(":STATIC="));
-            break;
         }
         a.append(i.expandedValue(k));