Revert "Disable warnings for deprecated for removal in Eclipse"

We should not disable such warnings

src/eclipse/org.eclipse.jdt.core.prefs

@@ -87,7 +87,6 @@ org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarningsNotFullyAnalysed=ignore
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=disabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
-org.eclipse.jdt.core.compiler.problem.terminalDeprecation=ignore
 org.eclipse.jdt.core.compiler.problem.typeParameterHiding=warning
 org.eclipse.jdt.core.compiler.problem.unavoidableGenericTypeProblems=enabled
 org.eclipse.jdt.core.compiler.problem.uncheckedTypeOperation=warning