Unused params shouldn't be set for all targets.

fmdb.xcodeproj/project.pbxproj

@@ -812,6 +812,7 @@
 				GCC_PREFIX_HEADER = src/sample/fmdb_Prefix.pch;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				GCC_WARN_SHADOW = YES;
+				GCC_WARN_UNUSED_PARAMETER = NO;
 				INSTALL_PATH = "$(HOME)/bin";
 				LIBRARY_SEARCH_PATHS = "$(LIBRARY_SEARCH_PATHS)";
 				PRODUCT_NAME = fmdb;
@@ -833,6 +834,7 @@
 				GCC_PREFIX_HEADER = src/sample/fmdb_Prefix.pch;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				GCC_WARN_SHADOW = YES;
+				GCC_WARN_UNUSED_PARAMETER = NO;
 				INSTALL_PATH = "$(HOME)/bin";
 				LIBRARY_SEARCH_PATHS = "$(LIBRARY_SEARCH_PATHS)";
 				PRODUCT_NAME = fmdb;
@@ -1273,6 +1275,7 @@
 				GCC_WARN_PEDANTIC = NO;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_PARAMETER = NO;
 				INFOPLIST_FILE = "Tests/Tests-Info.plist";
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				ONLY_ACTIVE_ARCH = YES;
@@ -1313,6 +1316,7 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_PARAMETER = NO;
 				INFOPLIST_FILE = "Tests/Tests-Info.plist";
 				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				OTHER_LDFLAGS = "-lsqlite3";
@@ -1334,6 +1338,7 @@
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
+				GCC_WARN_UNUSED_PARAMETER = YES;
 				PRODUCT_NAME = FMDB;
 				PUBLIC_HEADERS_FOLDER_PATH = include/FMDB;
 			};
@@ -1349,6 +1354,7 @@
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
+				GCC_WARN_UNUSED_PARAMETER = YES;
 				PRODUCT_NAME = FMDB;
 				PUBLIC_HEADERS_FOLDER_PATH = include/FMDB;
 				ZERO_LINK = NO;