Remove the locked flags

Author: ghaith

linux/Dockerfile

@@ -39,8 +39,7 @@ RUN rustup toolchain install nightly \
 		&& rustup component add llvm-tools-preview  \
 		&& rustup component add --toolchain nightly llvm-tools-preview  \
 	 	#Install documentation and coverage tools \
-		&& cargo install mdbook \
-		&& cargo install --locked grcov
+		&& cargo install mdbook grcov
 
 
 WORKDIR /build

win/Dockerfile

@@ -38,7 +38,7 @@ RUN C:/TEMP/rustup-init.exe --default-toolchain $env:RUST_VER -y
 RUN rustup install nightly
 
 RUN rustup component add llvm-tools-preview 
-RUN cargo install mdbook && cargo install --locked grcov
+RUN cargo install mdbook grcov
 
 RUN setx /M PATH $($Env:PATH + ';C:/buildtools/llvm/bin')